4runnerguy

i have a problem that when the motor is cold it runs fine. but when it gets worm it sucks like crap in all gears i put it in first it just bogs after i pass 3000 rpm its all good does this have to do with timing its been like it this for a week i dont know what to do

Froggy93

What year and engine size do you have? Also, any check engine light?

4runnerguy

1991 toyota 4runner v6 3.0 no light has flashed at all

Froggy93

Sounds like maybe a stuck EGR valve or sticking cold start injector. does it want to stall when sitting at an idle when you are stopped?

4runnerguy

nope but there is another thing that happends its just once and a wille rpm drops almost to zero for a split second even if im driving or standing still

4runnerguy

can u fix the egr valve without buying another one

Froggy93

yeah sounds mainly like your EGR valave is sticking. It is bolted to the pass side of the intake manifold. i.e. the side with out the intake tube and throttle body. Try tapping on it with a small hammer or other hard object. This may release the valve and it will hopefully close up completely. It sounds like you are running righ. The EGR feeds unburnt fuel vapors and exhaust gasses back into the intake. If it is stuck open, it is feeding the excess unburnt fuel vapors causing the engine to run rich. It will run like crap at lower RPM's and smooth out at higher RPM's. i.e. how your truck smooths out above 3K. Try that out.

Froggy93

It will eventually need replaced if it is sticking.

4runnerguy

its not tickin

4runnerguy

i found the problem one of the spark plug wires had a cut on the so the spark was jumpin to the side of the motor