still have this stuttering problem

[forcefedsupra]

I posted a few weeks ago asking about a stuttering problem. I installed a coil pack ground wire and checked the timing. I can't get the timing on 10 degrees. I figured it was a tooth off but changing that didn't help. I did notice that it doesn't stutter until it is warm and only at acceleration. I am out of ideas. It is barely drivable. This started when I changed the timing belt and front seals. I have checked the timing belt a million times now. Please help me.

 

[Idealsupra]

have you checked your ic piping for leaks?

 

[forcefedsupra]

No, I thought that would just cause fuel cut.

 

[Idealsupra]

check them all

 

[89turbotoy]

have you checked your ic piping for leaks?

yes do that.

 

[forcefedsupra]

Just in case anyone else gets this problem, it was a massive amount of oil and coolant in the spark plug valley especially on plugs 3 and 4.

 

[plaaya69]

^ I had that that problem as well with oil in the plug valley. Make sure you check your valve covers and also their is 3 screws for the oil and coolant and you may want to inspect them.

http://www.cygnusx1.net/Supra/TechTips/head_coolant_leak.aspx

 

[turbodriz]

When u put the timing belt on did u have No. 1 at tdc? When u check the timing are you jumping the 2 terminals on the dianostic port? I see u said something about moving a tooth on the cps. Why do that if you did'nt have to take it out?

 

[forcefedsupra]

The cps was a tooth off from when I had the head gasket replaced. I knew it didn't cause the problem but I was trying to correct anything I could find wrong. I did the timing correctly, I just didn't tighten the timing belt tensioner enough. After that, I still had the problem for months. I have moved 1400 miles away right after that so I haven't had much time to work on it. I decided to change the plugs and found a ton of oil and coolant in the valley. I know where it is leaking because one of the holes on the head where a valve cover bolt goes is stripped. I will fix that soon. As for now, I will just have to clean it out often.

 

[IwantMKIII]

check for bad spark plug wires...this is a very common symptom of that and something simple people commonly overlook

 

[forcefedsupra]

It is running good right now but the wires do seem flakey. I am buying real Toyota wires soon.

 

[Nick M]

When the car is cold, the computer runs the air fuel mixture richer, as it is easier to light against the cold air.

You lose that advantage when the car is at operating temps. So being cold can hide the need for tune up parts.

 

[forcefedsupra]

This problem started in June, in Texas.

 

[IwantMKIII]

This problem started in June, in Texas.

the engine is still cold even if it was 160* in texas and under the direct sun....it doesn't matter.