Misfire in all cylinders

[dragon mike 33]

Firing order is right timing marks r on and can a vacuum leak cause all cylinders to misfire I remember when I smogged the car the hc were really high and doing research hc mean high cylinder temp or lean condition

 

[dragon mike 33]

Gonna check compression not and no its only at idle and on load between 1g and 2g under load anything after that the car goes and runs great

 

[dragon mike 33]

Just did compression check it's 175 hot in all cylinders

 

[Calan]

I've moved this to a new thread. OP, please do not jump into an existing conversation that someone has started; it makes following the thread and helping that person very difficult.

 

[dragon mike 33]

Oh sorry about that I was trying to start a new one but couldn't do it cuz I'm on my phone but here's a recap I'm getting codes
My car is a 99 2.0 nt cars running lean carbon deposits on plugs and hc are high
P0300
P0301
P0302
P0303
P0304
P0300
New parts
Cam sensor
Crank sensor
O2 sensor ( upstream)
Tps
Plugs
Wires
Coil
Maf sensor

I've checked
Fuel pressure 48 psi idle
Compression 175 in all cylinders
Checked ohms on injectors 15 ohms all cylinders
timing is set right
checked for vacuum leaks with carb cleaner I don't know what else to check

 

[inthemidst]

Sounds like a bad ecu or a loose connection

 

[dragon mike 33]

Loose connection where and can the egr valve cause something like that I didn't think it would but unsure

 

[inthemidst]

If the egr is stuck completely open yes I would ohms test the most important connectors like crank n cam n coil pack to ecu and wiggle the harness to be sure there isn't a weak connection or wire

 

[dragon mike 33]

Gonna check out my egr tomorrow and do all the ohms check on everything tomorrow thank you let u know what happens tomorrow

 

[eclipsek17]

Also check ignition control module. Just had similar problem but my ecu ended up being the problem.

 

[dragon mike 33]

I'm kinda leaning towards the ecu cuz I've replaced the cam crank tps coil pack plugs it's becoming frustrating

 

[Ep1c]

What about your injectors? What condition are they in? I had same thing happen on my s4, took the injectors off and had them flow tested and cleaned rebuilt, problem solved

 

[dragon mike 33]

I did an ohms check and they r fine all in tolerance they r stock injectors

 

[Ep1c]

Just because their fine in ohms doesn't mean they are spraying correctly. its about $80 to have them flow tested rebuilt and cleaned. Especially if your car is high in mileage I would have them cleaned anyways. If that wouldn't fix it then definitely look into swapping your ecu.

I out octane booster in my eclipse once. Big mistake. Messed my injectors up, fouled up my plugs. Pia had to put a new fuel filter, new plugs and new injectors. Never again!

 

[dragon mike 33]

I'll do that this weekend have them flow tested and cleaned if that doesn't fix the problem then I'm gonna get a new ecu

 

[Ep1c]

See what they say after they flow test them, if they are fine then I wouldn't move forward with cleaning them. It would save you a lot of money if you just flow tested them and they endes up being ok.

 

[Lou98GSX]

i would double check your timing belt and make sure it didn't jump . setting timing on those engines is very tricky and if your off a tooth it will effect all the cylinders .