87 5.0 Troubleshooting & Solutions
- Thread starter Lateralgeez
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Hey guys a bit off topic but if you ever decide to go hydraulic clutch here is how the builder did mine. I remember once we were going to drive my buddy's 500hp fox up in NY (it had a small fire earlier) and when he pushed in the clutch, pop! Cable snapped. Anyway, there are a few different ways to do the slave cylinder bracket, just search miata t5 clutch etc.
I guess it was easier to do this than swap in a cable setup. Not totally sure.
A new hole was drilled further down the fork to prevent slave shaft binding.
I guess it was easier to do this than swap in a cable setup. Not totally sure.
A new hole was drilled further down the fork to prevent slave shaft binding.
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Slightly more on topic is low profile oil pan. Due to the sub frame I don't know, dry sump may be the only option. Reason for this is impact marks on the pan. The car doesn't have adjustable coil overs yet (bilstiens are still on the parts car awaiting re valve) or I would raise it for more clearance.
Excuse the 2010 grassroots budget exhaust. Hoping to go 3" properly in the future.
Excuse the 2010 grassroots budget exhaust. Hoping to go 3" properly in the future.
Attachments
Plugs
cyl 2 and 4 are black with deposits. This cyl bank also puffs white, at least on cold start. Cyl 6 leaked a small puddle. Occasionally it misfires (every few seconds) and feels hesitant at light throttle. I believe most of the issue is exhaust pipes flattened in half under the subframe.
Planning for mass air conversion, new wiring harness, and proper exhaust with o2 sensors.
cyl 2 and 4 are black with deposits. This cyl bank also puffs white, at least on cold start. Cyl 6 leaked a small puddle. Occasionally it misfires (every few seconds) and feels hesitant at light throttle. I believe most of the issue is exhaust pipes flattened in half under the subframe.
Planning for mass air conversion, new wiring harness, and proper exhaust with o2 sensors.
Today I did what I should have done a long time ago. Fired it up and pulled injector wires while listening to the engine. Turns out 4 and 5 aren't working. Got a loaner noid light tester and, to my amazement, they were getting pulse. Now I'm at the parts store swapping out those injectors. If you have a misfire, check your injectors!
I wasn't able to test plugs 7 and 8 due to the intake manifold. Any suggestions?
I wasn't able to test plugs 7 and 8 due to the intake manifold. Any suggestions?
mikestang63
SN Certified Technician
if you are replacing injectors, do them all at the same time. Be sure to use new O rings and oil them so they don't tear on installation
Curses. The new injectors didn't help. Either these remanufactured are also bad or injectors aren't the problem. For now I'll be happy with a V6 and loud valve tick.
Ruled out so far:
Distributor and tfi module
Plug wires and plugs
TPS
Fuel pressure
Fuel pressure regulator
Fuel rail
Vacuum
Timing
Compression
Ignition coil
Injectors - assuming both the remans are good
What are the chances an intake valve is stuck shut? That would explain the gunshot backfires...
Ruled out so far:
Distributor and tfi module
Plug wires and plugs
TPS
Fuel pressure
Fuel pressure regulator
Fuel rail
Vacuum
Timing
Compression
Ignition coil
Injectors - assuming both the remans are good
What are the chances an intake valve is stuck shut? That would explain the gunshot backfires...
Thanks, I did this a few months ago but paid a lot for reman injectors for whatever that's worth. Old ones were full of dirt from the tank - dry rotted fuel pickup sock. That's when I replaced the fuel filter, rail, and pressure regulator.
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Sounds like I need to remove the valve cover and see if they are moving. Some plugs are black so that credits my stuck shut theory.
Courtesy of ehow
How to Check a Stuck Engine Valve | eHow
Courtesy of ehow
How to Check a Stuck Engine Valve | eHow
Oil is from the breather tube that runs to the tb. Perfectly normal. Just clean as needed.
Ok thanks! Good thing I run 93 octane it's probably 87 in the combustion chamber lol. Seems like both valve covers should have a breather.
For giggles, what plugs are you running? How do they look when you pull them? What cam, firing order are you using?
If you keep fouling plugs a hotter set could help..... especially if your burning oil.
If you keep fouling plugs a hotter set could help..... especially if your burning oil.
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