New project: 1996 Miata with Ford 5.0 - Page 12 - v8 Miata Forum - Home of the v8 Miata Conversion
v8 Miata Swap Chat


Reply
 
 
 
LinkBack Thread Tools Search this Thread Rate Thread
Old 06-05-2018, 05:59 AM   #276  
V8 Miata Enthusiast
Thread Starter
 
Join Date: Aug 2014
Location: Seven Hills, OH
Posts: 415
Thanked 7 Times in 7 Posts
Default

Went ahead and ordered new coolant temp sensor and air temp sensor, as well as a fuel pressure gauge as these seem to be the items that can cause cold idle problems. We’ll see what happens once they are installed
jrmotorsports55 is offline   Reply With Quote
Old 06-17-2018, 06:01 AM   #277  
V8 Miata Enthusiast
Thread Starter
 
Join Date: Aug 2014
Location: Seven Hills, OH
Posts: 415
Thanked 7 Times in 7 Posts
Default

Right now I've about had enough of this car. Replaced the IAT sensor and added the fuel press gauge. Disconnected the battery to clear the ECU, let it sit for 30 mins, then hooked it back up and started it. No change in cold start issues. Just stalls out unless you hit the gas, and even at that, you have to chase it for a minute or two before it becomes slightly stable, then when it hits 100-120 deg water temp, it seems to level out and will run on it's own. I am not thinking it is just too much cam for the stock ECU and I will either have to live with it, or reprogram the ECU (trick flow stage 2 cam).

On to the new issue. I have noticed it seemed to be lightly smoking for a while now while running, but it was very faint and I was thinking it was just running a little rich (car has tiny cats, so it has always smelled pretty bad). Today, once it warmed up, and I was revving it some, the smoke started to get heavier, and has a bluish hue, and smells like oil. Worst I have seem it by far. When I built the engine, I used as set of used Trick Flows (allegedly only had a few thousand miles on them) and have a feeling the guides/seals were a little more worn than advertised. Going to pull the plugs and do a compression test to see what I find, but it sounds like the engine is coming back out. I still have the oil pan leak to fix, so at least that will make that easier to do vs dropping the front suspension out. I very well way change the cam down to something a little milder as well while it is out. A lot to think about and inspect before I pull it, but not very happy right now.

More to come....
jrmotorsports55 is offline   Reply With Quote
Old 06-18-2018, 04:11 PM   #278  
V8 Miata Noob
 
Join Date: Sep 2013
Location: Dallas, TX
Posts: 15
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Sorry to hear about your woes, but it makes me want to pull the cam in the engine I bought and go TFS stage 1 even more. My engine is from a guys mustang and has AFRs with a pretty aggressive cam.
AnthonyS is offline   Reply With Quote
Old 06-18-2018, 05:10 PM   #279  
V8 Miata Enthusiast
Thread Starter
 
Join Date: Aug 2014
Location: Seven Hills, OH
Posts: 415
Thanked 7 Times in 7 Posts
Default

Thanks. Yeah, I may just pull out the Ford EFI and go with a FiTech setup and be done with it. Not sure.
jrmotorsports55 is offline   Reply With Quote
Old 06-18-2018, 05:21 PM   #280  
V8 Miata Enthusiast
Thread Starter
 
Join Date: Aug 2014
Location: Seven Hills, OH
Posts: 415
Thanked 7 Times in 7 Posts
Default

Just found a FiTech 30003 setup with 62 lb injectors for $350 shipped brand new in box, snagged it. Could not pass up that price. I'll either use it or resell it. Thinking the 80s EFI needs to go. I can resell all the parts I have for the Ford EFI and probably pay for the FiTech, a manifold, and a ignition box.
jrmotorsports55 is offline   Reply With Quote
Old 06-18-2018, 05:40 PM   #281  
V8 Miata Noob
 
Join Date: Sep 2013
Location: Dallas, TX
Posts: 15
Thanks: 0
Thanked 0 Times in 0 Posts
Default

I didn’t want to add to it all, but I decided to do fitech long ago or Holley or someone. The ford stuff is too many wires and so outdated. I had actually given up on ever doing a swap and sold my Miata engine and t5 until I considered this a few years ago. We are building a new house so everything is on hold until winter. I have a Miata a 306 with AFRs and an 8.8 with 3.55s. I also have a new oil pan and other stuff. I need swap parts and a T5Z though.

I anxiously await to hear your success with the fitech and after your ordeal I’m glad you got a good deal on it.
AnthonyS is offline   Reply With Quote
Old 06-18-2018, 06:16 PM   #282  
V8 Miata Enthusiast
Thread Starter
 
Join Date: Aug 2014
Location: Seven Hills, OH
Posts: 415
Thanked 7 Times in 7 Posts
Default

Thanks, yeah, probably the best way to go in the long run. Will also make hood clearance easier.
jrmotorsports55 is offline   Reply With Quote
Old 06-23-2018, 07:15 AM   #283  
V8 Miata Protégé
 
ToySnakePMC's Avatar
 
Join Date: Oct 2012
Location: Fuquay Varina, NC
Posts: 487
Thanked 28 Times in 26 Posts
Default

I plan to follow along here. I know you’ve had way more than your share of frustrations with motor-related issues, and I’m glad you haven’t given up. Your Miata looks so sharp in that driveway photo, please keep posting pics as you move forward on the FI Tech. You got a steal and you deserve a small victory!
ToySnakePMC is offline   Reply With Quote
Old 06-23-2018, 08:00 AM   #284  
V8 Miata Enthusiast
Thread Starter
 
Join Date: Aug 2014
Location: Seven Hills, OH
Posts: 415
Thanked 7 Times in 7 Posts
Default

Thanks, it took a lot of self control last weekend to keep from unloading a full mag of .45s in to the car. Still not sure if the Fitech will go in or not. Been researching all week, and I may have a few more tricks I can try to get the stock FI to run the stage 2 cam. I know it is common for low vacuum cams to cause idle issues with the Ford EFI, we'll see. I have to get the smoke/oil burn issue resolved first. Going to do some testing on it this weekend to see if I can narrow down the problem. If it comes to it I may try pull the heads with the engine in the car, really don't want to pull the engine out because that means taking out the radiator/fans/driveshaft/shifter/trans/bellhousing/clutch/flywheel just to be able to pull the engine out. I know I still have to do the pan gasket, but I'd almost rather deal with it in the car than remove everything that has to be removed to pull the block. Once the oil burn issue is resolved, then I will go back to the idle issue. I have the Fitech sitting on a shelf in my basement, so it's there if I need it.
jrmotorsports55 is offline   Reply With Quote
Old 06-23-2018, 01:57 PM   #285  
V8 Miata Enthusiast
Thread Starter
 
Join Date: Aug 2014
Location: Seven Hills, OH
Posts: 415
Thanked 7 Times in 7 Posts
Default

So, I am at a total loss. Wanted the run the car and see if I could isolate the smoking issue. Started the car, and there was a little blue smoke. Revved it a few times to get it to idle on it's own, and the smoke stopped. I ran it for 15 mins, got everything good and up to temp (oil to 200 deg), and no smoke. Revved it up pretty good, no smoke. It is now fine. I have no idea why last weekend it was burning smoke, and now it is not. The exhaust is back to smelling rich, not like burning oil which it did last weekend. I'm still planning on pulling the plugs and doing a compression test to check things out, but it seems to be OK. If that checks out fine, I'll just keep an eye on the next few times I run it, and if I still see any smoke, whether on start-up or running, pull the valve covers and check the valves our guide/seal wear. The bottom end was redone with new rings/bearings, but I did not touch the heads as they were supposed to be low mileage and looked great. We'll see.
jrmotorsports55 is offline   Reply With Quote
Old 06-28-2018, 06:23 AM   #286  
V8 Miata Enthusiast
Thread Starter
 
Join Date: Aug 2014
Location: Seven Hills, OH
Posts: 415
Thanked 7 Times in 7 Posts
Default

Decided to work on the hood trimming yesterday as I did not want to deal with the engine yet. Got it trimmed and it now closes. I still have to use some clay to check for the tight spots, but it's a step in the right direction. I have a vent kit for it as well, but did not want to start cutting it for that install yet.







jrmotorsports55 is offline   Reply With Quote
Old 06-28-2018, 05:50 PM   #287  
V8 Miata Enthusiast
Thread Starter
 
Join Date: Aug 2014
Location: Seven Hills, OH
Posts: 415
Thanked 7 Times in 7 Posts
Default

So, I pulled the plugs and did the compression test today. Good news is that 6 of 8 were at 165, and the other 2 were 170 and 160, all where they should be for the trick flow heads on stock pistons. The bad news is that 6 of the 8 plugs had evidence of oil burn on them, only cylinders 3 and 7 looked clean. 4 looked the worst with 5 being the second worst. The other 4 looked about the same, minor signs of oil burn. So, first I'm going to look into the intake/PCV system, as I did make a few changes for clearance. Then it will be pulling the valve covers for inspection of the seals and guides. Looks like the heads will likely be coming out at some point. For now, I'm going to keep on with trying to complete the swap so that is at least done and the car will be ready to drive.
jrmotorsports55 is offline   Reply With Quote
Old 07-01-2018, 05:53 AM   #288  
V8 Miata Enthusiast
Thread Starter
 
Join Date: Aug 2014
Location: Seven Hills, OH
Posts: 415
Thanked 7 Times in 7 Posts
Default

So, I have been researching oil burn in the 5.0s, and have found a lot of info on common issues with the PCV, especially in situations with the Cobra/Explorer intake install as well as removing the baffle on the pass valve cover for roller rocker clearance (I have done both). It makes sense that it would be a PCV issue/oil pooling in the intake manifold, as before this issue the car had never been driven and only sat in one spot for the last 4 years, and just run while stationary. I've never had oil burn smoke/smell, just slight rich smoke from the car running rich. About a month ago a moved the car out of my garage to back it in to the driveway and wash the 4 years of dust off, then quickly pulled it back in and turned it off, neither time running it long, just the in and out. It was the next time that I ran it that I had the oil smoke and smell of oil burning. I ran it once more a week later, and other then a little blue smoke on initial startup, it ran clean. My thought is that there could have been oil pooled in the intake manifold, from all of the times running it while sitting stationary, then when I moved it, that oil moved and started running down the ports in to the intake valves/cylinders. Seems legit to me based on no prior smoke and the situation. Yesterday I put a 1/8" restrictor in the fresh air hose from the throttle body to the valve cover, as from what I have read, this can help keep the PCV valve from pumping too much oil mist in to the manifold as it lessens the airflow without allowing too much pressure/vacuum to build inside the engine. I still have to pull out the PCV valve and make sure the screen and PCV are all in good order (pretty sure I did when I put the engine together, but that was a few years ago, better to be safe than sorry). I will probably put a catch can in the system as well and see what happens. Seems legit to me. Any thoughts/opinions?
jrmotorsports55 is offline   Reply With Quote
Old 07-08-2018, 06:08 AM   #289  
V8 Miata Enthusiast
Thread Starter
 
Join Date: Aug 2014
Location: Seven Hills, OH
Posts: 415
Thanked 7 Times in 7 Posts
Default

Quick update, pulled my PCV out, and there is no screen in there. Did a little reading up on the Explorer intakes, and there are two baffle designs. I remember that mine is the one with the revised baffle, so the normally do not run with a screen as the baffle should do the job. I am probably going to go ahead and pick up a screen and see if I can install it as well because it should not hurt anything and I want to see if I can eliminate this oil burn issue. More to come.
jrmotorsports55 is offline   Reply With Quote
Old 07-16-2018, 05:22 AM   #290  
V8 Miata Enthusiast
Thread Starter
 
Join Date: Aug 2014
Location: Seven Hills, OH
Posts: 415
Thanked 7 Times in 7 Posts
Default

Quick update, ordered and installed the oil baffle screen. Hoping the oil burn issue should now be addressed. Also used modeling clay to check hood clearance when closed. Appears my tightest spot is the TPS sensor, and I have roughly 3/16" so I am thinking I should be OK. All other areas had over 1/4" clearance. Next is to calibrate the tach, then take around the block for the first time. More to come.
jrmotorsports55 is offline   Reply With Quote
The Following User Says Thank You to jrmotorsports55 For This Useful Post:
ToySnakePMC (07-17-2018)
Old 08-12-2018, 07:36 PM   #291  
V8 Miata Enthusiast
Thread Starter
 
Join Date: Aug 2014
Location: Seven Hills, OH
Posts: 415
Thanked 7 Times in 7 Posts
Default

Been a while, but finally got out to the garage today. Fired it up and once warmed up calibrated the tach per Martin’s guide. After that I decided it was time for a quick ride around the block. Good news is that it made it and never stalled or felt like it would die. It has no power when you hit the gas and was really jerky at low RPM. Definitely has some tune issues which I already knew with my idle issues. Very glad it ran, but not looking forward to chasing down this issue.

Last edited by jrmotorsports55; 08-18-2018 at 06:11 AM.
jrmotorsports55 is offline   Reply With Quote
Old 08-18-2018, 06:17 AM   #292  
V8 Miata Enthusiast
Thread Starter
 
Join Date: Aug 2014
Location: Seven Hills, OH
Posts: 415
Thanked 7 Times in 7 Posts
Default

Pulled codes last night, got 67, 29, and 33. Can only do KOEO test due to the 67, so I'm going to try to get those 3 resolved (hook up clutch switch, vacuum lines to EGR, and hook up VSS). After that I'll see if I can pull the KOER codes and do a balance test with my scan tool to see if I can get this thing running right. Also have an exhaust leak I need to figure out (either headers at heads, or collector flanges), and am going to need to resolve the oil pan leaking at both front and rear humps when it heats up and has been running for a while. Also need to reseal the power steering pump as I have noticed that has started to drip a bit when running for a while from the back cover area. More to come.
jrmotorsports55 is offline   Reply With Quote
Old 08-19-2018, 06:06 AM   #293  
V8 Miata Enthusiast
Thread Starter
 
Join Date: Aug 2014
Location: Seven Hills, OH
Posts: 415
Thanked 7 Times in 7 Posts
Default

Got some time in the garage yesterday. I plumbed the vacuum lines for the EVR and EGR, so that should take care of code 33. I pulled out the ECU from under the carpet and jumped pin 30 to pin 46 per Martin's guide, that took care of code 67 (I thought about trying to hook up an actual clutch switch or neutral sensor, but both switches on the OEM pedal are in use for starting and cruise, and I have an early transmission that does not have a neutral switch in the case). I also located the wires for the VSS and started that wiring job. I should get the pigtail this week, but am travelling for work the next few weeks and probably won't finish that until labor day weekend.
jrmotorsports55 is offline   Reply With Quote
Old 08-20-2018, 05:46 AM   #294  
V8 Miata Protégé
 
ToySnakePMC's Avatar
 
Join Date: Oct 2012
Location: Fuquay Varina, NC
Posts: 487
Thanked 28 Times in 26 Posts
Default

Any progress is forward progress! Keep those updates and pics coming. Hope you can put some miles on this V8M in a few weeks.
ToySnakePMC is offline   Reply With Quote
Old 08-20-2018, 06:08 AM   #295  
V8 Miata Enthusiast
Thread Starter
 
Join Date: Aug 2014
Location: Seven Hills, OH
Posts: 415
Thanked 7 Times in 7 Posts
Default

Thanks, I appreciate it. Unfortunately with work and other stuff, based on the current “to do” list and issues to be resolved, I doubt it will see much mileage this year other than around the block test drives. Better than nothing, I guess.
jrmotorsports55 is offline   Reply With Quote
Old 08-27-2018, 04:36 AM   #296  
V8 Miata Enthusiast
Thread Starter
 
Join Date: Aug 2014
Location: Seven Hills, OH
Posts: 415
Thanked 7 Times in 7 Posts
Default

Quick update, wired up the VSS sensor, so that is now resolved. Pulled the KOER codes, and came up with 41 and 91 - both banks lean. Good news is that from what I can tell, it could just be my O2 ground wire for the O2 harness, as I just grounded it to the firewall. I'm going to move the ground to the block, and check some of the other wires for the O2s, and see if I can take care of the codes. The sensors are brand new Ford parts, so they should not be the problem. More to come.
jrmotorsports55 is offline   Reply With Quote
Old 09-04-2018, 04:57 AM   #297  
V8 Miata Enthusiast
Thread Starter
 
Join Date: Aug 2014
Location: Seven Hills, OH
Posts: 415
Thanked 7 Times in 7 Posts
Default

Quick update, relocating ground to engine did not fix it. Now time to test wires.
jrmotorsports55 is offline   Reply With Quote
Old 09-09-2018, 06:26 PM   #298  
V8 Miata Enthusiast
Thread Starter
 
Join Date: Aug 2014
Location: Seven Hills, OH
Posts: 415
Thanked 7 Times in 7 Posts
Default

Got some time in the garage and wanted to post an update. I checked the O2 ground and the wiring is fine so that is not my problem. Checked the new O2s and verified they are the correct 3 wire sensors ( new from Ford). Checked the TPS voltage and it is .864 at idle, 4.47 at WOT. Started it and set timing at 10 deg. Ran KOER test and still pulled the same 2 codes. Then checked fuel psi, off vacuum I am seeing 42-43 psi, and with vacuum I am seeing 38-39 psi. This seems high based on what I have read. Funny thing is that my ECU errors are 41 and 91 which are lean codes, not rich. It smells rich and loads up when you hit the gas. It seems to have a small exhaust leak on both sides at the header/collector, all I can think is that maybe that is cause my my lean codes. I have to drop the oil pan to fix a leak at the front hump, so the exhaust will get dropped so I can pull the k member. I’ll try to address the exhaust leak at that time and hopefully that resolves the lean code. We’ll see. It’s definitely frustrating chasing these little bugs.
jrmotorsports55 is offline   Reply With Quote
Old 09-13-2018, 09:00 AM   #299  
V8 Miata Fan
 
Join Date: Oct 2014
Location: Central Pennyslvania
Posts: 33
Thanks: 0
Thanked 2 Times in 2 Posts
Default

I could be wrong, but I think those lean codes mean the computer is adjusting to full lean, which means the engine is running rich.
Ford5.0 is offline   Reply With Quote
Old 09-13-2018, 10:07 AM   #300  
V8 Miata Enthusiast
Thread Starter
 
Join Date: Aug 2014
Location: Seven Hills, OH
Posts: 415
Thanked 7 Times in 7 Posts
Default

From everything I have read, the codes I have (41 and 91) are for when the engine is reading extremely lean, so it compensates and dumps a ton of fuel in causing it to run really rich, which mine is. Having them together is normally wiring, bad O2 ground, low fuel pressure, vacuum leak, or exhaust leaks pre O2 that could cause low reading.
jrmotorsports55 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
1996 Miata Project Nowak1981 Parts For Sale 11 07-04-2015 12:17 PM
1996 Canister Purge line Gunpilot V8 Miata Wiring, Electrical, and ECUs 16 06-12-2015 09:00 AM
Drive Flashback: 1996 Mazda Miata M Coupe charchri4 Anything Goes 2 05-08-2015 02:25 PM
1996 Mazda Miata Monster MX-5 - SOLD - ericles1028 Cars For Sale 16 10-22-2013 06:05 PM
1996 Ford Explorer Rebuild ekaske Ford V8 Discussion 4 11-16-2012 07:48 AM



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -5. The time now is 07:02 AM.


© 2018 MH Sub I, LLC dba Internet Brands
We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.