Hello all,

Im a bit confused as to whats going on with my car.I posted something similar to this before but would like more insight if possible.My problem is I keep smelling exhaust fumes in my vehicle when I drive.It's making me upset (and dizzy)!!!.
I have covered every hole in the firewall that you can think of.I also bought a new evap canister and filter.My next guess is the engine I installed in it.
Can that be causing excess fumes

HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

 

What type of engine did you install in it? If it is just a different Olds engine I wouldn't think it would cause an exhaust smell unless it has a specific problem. How far back do your tailpipes go? If you have them cut off after the mufflers you might be getting some blow back from under the car...

The only other thing I could think of is if the engine just needs a tune up.

 

I have a 72 olds 350 rocket in it.My pipes go back behind the rear wheels and I put in new plugs when i installed the engine about 6 months ago.I plan on changing the wires and cap and rotor this weekend.That wouldnt cause the smell though,would it?
I'm going get it timed also.I timed it by ear and what i thought was right but i think it might be running to rich.

 

It's not the wires or rotor. I would put the car on jack stands, start it and get under there to start looking for exhaust leaks.

 

Definitely a good idea. Please be careful when looking for them with the engine running though. Make sure you have a buddy near by.

You might also want to borrow a buddy's timing light or rent one at your auto parts store. They are invaluable and necessary when it comes to setting your timing properly.

Finally, you might want to get a vacuum gauge to set your idle mixture screws. A tachometer comes in handy too.

 

I vote for exhaust leaks also. Do a visual/tactile check first with engine off and system cool. Feel for any corroded pipes, especially at curves where moisture/condensation can collect and then look for obvious rust holes.

 

I have all new exhaust from the headers back. 2.5 inches.I got all new exhaust when I put the motor in.I was going to get under there and look for possible rust holes in the floor. I just installed new carpet and didnt see any when I put it in but maybe I missed.I'll keep you guys updated.

 

Had a similar problem and it was the seal on the trunk Tightened the latch down to where i had to slam it shut but it didn't suck fumes any more Try It Larry vintageozarks.com

 

Where does the exhaust exit?

Allan

 

I just installed new weatherstripping on the trunk. I actually have to give it a little slam to get it to close.

 

It exits behind the rear wheels

 

behind the rear wheels under the car, or out behind/beside the body, behind the rear wheels. fumes can still collect under the car if the exhaust is exiting under the car.

 

I agree...try adding pipes to the rear bumper and see if it improves. Sounds like you might be getting the fumes from accumulation under car. That is why factory runs them to the bumper.

Regards,
Fred