Just bought a 95 talon tsi that wont run ?

[v8killer]

wont pick up the car till saturday but thought i would get some opinions, timing is lined up, he has tried 2 new computers, clean throttle body and injectors,new fuell filter pump is priming and started it after throttle body was cleaned with the upper intercooler pipe unhooked and it ran smooth for a few minutes then hooked the pipe back up and it wont run. could it be the mas air sensor !

 

[poonman]

what are the CEL's

 

[v8killer]

it's saying cam position sensor but it will run for a while before it throws it, i found out that id does have a blown headgasket there is oil in the resevior. just trying to figure out how coolant got in the intake manifold and uicp, it runs but it feels like it has a 1 cyl miss and the plugs are black ?

 

[poonman]

coolant will get in there from the PCV valve and the breather hose, if you have a blown head gasket then the water can get just about anywere and the reason its not feeling like all 4 fire might be from water in the cylinder is nocking out the the spark all the way, check your compression on the cylinders if you can, you need a min of 90PSI to even fire

 

[v8killer]

the antifreeze was green fresh from the rad if it came from the pcv it would have been mixed with oil, it has 180#4,180#3,180#2,170#1 and #1 was clean a few times then it went black rich so i think the water cleaned it from the gasket and it alittle lower than the rest and it does have oil in the over flow tank. so head gasket sets on its way !

 

[poonman]

it can also get in threw the EGR valve, i had it happen once.

 

[v8killer]

true i didn't think about that, i blocked the coolant to the throttlebody no knowing if it got in that way ! i'll tear it all down and replace every gasket and check so things !

 

[laserspeeddemon]

Check your compression, then check spark and fuel. Go from there.