Please help me sort this one out guys.....I recently posted that i experienced some detonation on christmas eve and since had the car looked at by a rotory specialist. He got the car turned over and did a few things and told me that i had blown the the lower intake manifold gasket (which is the original paper one that came with the 93). He quoted me a good price to replace it with the metal aftermerket gasket. My symptoms are: hard to keep running, when running it has lumpy idle and boost gauge reads between 8 to 12 lbs. of vacuum. Also it smokes until car is completely warmed up...
I asked him about the smoking and he said i need a new O2 sensor and also the fact that the car has no emissions it would be a bit more noxoius.
Bottom line guys is I don't want to spend the money on this gasket replacement because it seems i have the symptoms of a bad seal.
Would a compression test help me to diagnose if it is a bad gasket or a bad motor? Please help......
93 base w/ 60000
Pettit unlimited ECU
3" stainless all the way
Greddy profec b @ 12 psi
Pettit intake, power pulleys and ast
boost gauge
koyo radiator
PIAA lighting
Eibach springs
ACT street/strip w/ lightened flywheel
stock rims, intercooler, turbos and motor.....

 

There is NO substitute for a proper compression test! Get one.

Brian

 

Thanks.anyone else??

 

??Oh speak to me all ye brightful ones......

 

Get a compression check done for sure. Even if your lower intake gasket sprung a leak it wont effect the test. It was my understanding that when a intake gasket leaks it usually raises the idle since more air is going into the engine. Maybe if the leak was really bad it could make the engine idle like crap. The O2 sensor causing the smoke doesnt sound right.

 

Hey G. I live near Daytona. Who is the rotary specialist you used?


-Jason
atarilep@bellsouth.net

 

I have been dealing w/ a guy that used to work with Pettit and has now started his own shop called autosport in Ft. Lauderdale. He set up my car with an 3' exhaust straight through. With a pettit unlimited ECU and Greddy profec B to control boost.....He also installed an ACt clutch, eibach springs,and a koyo radiator..The car was running great@ 12psi with slight creep to 14psi before I had the detonation occur. I think i got some bad gas cause the car is set up right. It does have 60000 miles on engine. He is really cool and alot cheaper in labor than Pettit. Everything he has done it has been up to par with all I have learned from the forum and elsewhere so I know he hasn't shafted me. I would recommend him to anyone. I am going to get a compression test done locally and if the numbers are low or the motor is blown i am going to pull it for new seals.....G

 

Thanks a compression test is my next step...