QuestionQUESTION: I HAVE A 1999 CADDY , RUNS GREAT WHEN ENGINE WARM BUT RUNS ROUGH WHEN COLD OR WONT START SOMETIMES ,IT IS AT CADDY DEALER ,HE WANTS TO TAKE OFF HEAD , HE HAS HAD IT TWO WEEKS , UP TILL TODAY HE SAID IT IS NOTHING BIG ,I DON'T KNOW WHAT TO DO . HE SAID IT WASN'T ANY THING NOW ALL OF A SUDDEN IT IS ? PLEASE HELP .
ANSWER: ask him WHY he wants to pull the heads.
tom
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QUESTION: DEAR TOM , HE SAID IT WAS A COMPRESSION PROBLEM .IT SHOULD NOT RUN WELL IF WARM IF IT IS COMPRESSION ,DO YOU THINK .IT IS 1999 STS CADDY . BOUGHT IT USED ,NOT HAD ANY PROBLEMS UNTILL NOW SO I DONT KNOW MUCH ABOUT ANY REPAIRS ON IT . I HAVE HAD IT FOR A YEAR ,RAN GREAT TILL TWO WEEKS AGO . WENT OUT TO START IT WOULD NOT START . WENT OUT TWO HOURS LATER IT RAN LIKE A CHAMP. JUST HAVE PROBLEM FIRST THING AFTER IT SITS FOR A WHILE
AnswerIt is possible that the head gaskets are leaking when the engine is COLD and once it warms up, the head gaskets expand and seal themselves.
But I think you may have one or more leaking fuel injectors which drip gas into the cylinders and washes away the engine oil from the piston rings which would give you LOW compression when the engine is cold and higher compression when the engine is warm.
I think his diagnosis needs further testing BEFORE he pulls the heads off.
But, Without personally checking the symptoms myself, I can only make an observation as to what your problem is.
