Stunt_Man

Hello! I have problem with 350 TPI.
when engine is cold it run perfect! but when its hot... weird problem
it sounds like loosing spark. on idle engine shakes a litle bit and on higher rpm i can hear that some times one cylinder lose spark? when i put in on drive RPM's are low and unstable
i replace: distributor cap, rotor, pickup coil, o2 sensor, spark plugs, ignition wires, water temp sensor
can it be MAF problem?
when i stop engine and start it again its OK for maybe 5 seconds and again...

Damon

Well, you can do a quick-and-dirty MAF test by temporarily unplugging it. Check engine light will come on, but if the MAF was giving bad readings, it should run noticably better.

Do you have access to a scan tool? It's tough to traced problems on any EFI engine without seeing things the way the ECM sees them.

If I had to give you a WAG, I'd guess a vacuum leak before I'd guess a bad MAF.

fireburdluvr85

Have you checked your Injectors? Ohm to make sure they are around 16. Also they tend to fail hot and it can sound like how you describe. Test them hot

IROCgiraffe

iTrader: (3)

Check be the ICM.... It starts to run oddly when warm, and may not throw any code(s).

Stunt_Man

i replaced everything except ECM, MAF, INJECTORS
i don't know what to do
and exhaust gases smells really badly

89blues

iTrader: (1)

unplug the maf when it starts to act up and see if it smooths out

Stunt_Man

nope, no reaction