lean exhaust fumes?

[04mtngoat]

tried several products on this stain above the exhaust tip on my neighbors truck. anyone ever seen this before or have any sugestions? tried scratch-x, 80,83,205,105, body solvent and several other brands of products. truck is an 07 tacoma.

[Fly Bye]

Re: lean exhaust fumes?


What do you mean by lean exhaust fumes?

[04mtngoat]

Re: lean exhaust fumes?

he said truck wasnt running right. lean fuel mix would make the exhaust hotter and possibly damage paint? dealer said fuel filter was plugged and air/fuel mix was running lean.

[Fly Bye]

Re: lean exhaust fumes?

lean fuel mix would make the exhaust hotter and possibly damage paint?

I think the paint is the least of his worries as a lean fuel mixture could burn a valve, or a piston. If the fuel filter was plugged, the engine would not run period.

[cnfowler]

Re: lean exhaust fumes?

Pictures aren't showing up.

Colin

[04mtngoat]

Re: lean exhaust fumes?

sorry, im a newbie. having trouble posting pics. thread i was reading about posting pics was wrong.

[04mtngoat]

Re: lean exhaust fumes?

let me see if i can figure out how to resize the images.

[Bill Davidson]

Re: lean exhaust fumes?

let me see if i can figure out how to resize the images.

[04mtngoat]

Re: lean exhaust fumes?

newbies-gotta love them.

[04mtngoat]

Re: lean exhaust fumes?

been working out of town alot. these pics should be bigger. sorry for the wait. any suggestions on removal of stain or cause?

[Bill Davidson]

Re: lean exhaust fumes?

The tailpipe looks dark, more of a sign of running rich. I curious if modifications have been made to this vehicle. In the last photo the tailpipe doesn't look like it come out far enough to expel the exhaust properly

First I would look into the source of the issue. If you don't fix/eliminate the source there isn't much sense in attempting a restoration. Likely it will go back to the same condition and you'll simply have less clear coat in a area the needs it.

I'm not sure where I would start. I'm puzzled.

[davey g-force]

Re: lean exhaust fumes?

I'm surprised that didn't come off with the products you mentioned.

How were you working them in?

[04mtngoat]

Re: lean exhaust fumes?

with a pc. do not have rotary. had good luck with another brand (can we name other brands on this forum ?) of compound when using it on stained paint and overspray. wouldnt touch it though.

[04mtngoat]

Re: lean exhaust fumes?

no mods stock with roughly 30,000 miles. driver is in early 60s. daily driver roughly 60 miles to work). i noticed tailpipe was roughly 5 inches or so underneath bed. never seen any issues with gm or fords (gas or diesel) with poor aftermarket exhaust installs when under the bed.

[Michael Stoops]

Re: lean exhaust fumes?

If an engine is running rich it can deposit a lot of material on body panels near the exhaust tip, but that should easily buff out with a wide variety of products. In fact, we just did that last night at our TNOG on an aftermarket turbocharged Mazda RX7:

Before:


After:



But if you're dealing with actual heat damage to the paint and not just carbon deposits, then you may never be able to fully correct it with buffing. It may need to be stripped and repainted. Without seeing it in person it's a bit difficult to tell if it's just "dirty" or truly "damaged".

Oh, and 04mtngoat, we have no problems at all with you or anyone else mentioning other products on MOL. We know there are plenty of products on the market that could have corrected the issues on the RX7 above. If the one you've used successfully before is not fixing the issue on this truck, and other products being suggested in this thread aren't doing the job either, then we suspect you have a more serious issue on your hands.