hi guys
i have a 91 fiesta rs turbo and at cold idle its very smokey but when it warms up its fine. ive done the valve stems already and i wreckon the turbo is fine i think the rings are gone could anyone tell me what the compression pressure of the engine should be.

any help would be cool thanks

 

ive bin trying to find out wot a good pressure reading is for the 4 the erst/frst engine is, but no luck yet! i think its good if all 4 cylinders give around the same pressure! anyone?

 

About 125psi is about right standard.

Cheers
Dave

 

im getting 10 bar or a 147 psi the problem im having is that when i start the car from cold its very very smokey but when it warms up its fine and when its driving its fine . im not sure if its the turbo or not

 

147PSi seems a little high to me. Is it a Turbo bottom end?

Best way to check to see if the rings have gone is test it as normal with a compression tester and then put some oil in the cylinder and test it again. If the compression raises after putting some oil in your rings have gone as the oil makes a seal.

Hope this helps.

 

yeah its turbo bottom end i had the head off there a few weeks ago and there the right piston and all that .

i did a proper test with and without oil when was properly warm and it didnt seem to go up much at all.

but since then i found the turbo seals are bolloxed so have get that done and it should be all good . but its good to know the bottom end seems to be good .

thanks for all your help people