- Jul 12, 2011
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my 87 lx with MAF smokes from the right tailpipe and is very hot..and the left tailpipe is cold..what could it be?
smoke coming from one tailpipe?
- Thread starter foxbodymike87
- Start date
Blockage in the exhaust somewhere?
Take a rag (no oil or fuel on it) and stuff it in each tailpipe one at a time. Does one flow more than the other?
Could also be an engine issue...one bank of cylinders is running lean. If this is the case, you should run the engine codes to confirm.
Take a rag (no oil or fuel on it) and stuff it in each tailpipe one at a time. Does one flow more than the other?
Could also be an engine issue...one bank of cylinders is running lean. If this is the case, you should run the engine codes to confirm.
- Jul 12, 2011
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one of my friends who is an ASE tech said it was running lean and he said not to worry about it...just wanted a second opinion
ratio411
Founding Member
If one muffler was clogged somehow, could the exhaust from both banks be forced to go through the H-pipe into just one side of the exhaust, thereby making it hotter than normal and leaving the clogged side cold?
??? I don't know myself, but seems to me both tailpipes get hot in normal conditions.
??? I don't know myself, but seems to me both tailpipes get hot in normal conditions.
- Jul 12, 2011
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Nope, smog delete and catless H-pipe..i was thinking it was a block to..mabye a fat rat crawled his way in and couldnt get out?
Both pipes should have equal flow..that's the reason for the crossover.
Reason i asked him to stuff a rag in each pipe was to check for flow. I see this all the time in cars that are stored. Big mouse makes a nest in muffler and blocks it off.
By blocking one pipe at a time, it forces the exhaust through the crossover and into the other pipe.
If you have a blockage in the exhaust, you'll see a huge difference in flow.
If you don't, then it's a tuning issue. Both sides should be equal.
I had this problem about 1 year into owning my car. Turns out the first owner installed glass packs and they had rusted out inside and it shoved the fiberglass packing material into the pipe above the rear axle on the drivers side. I tried using a plumbers drain clog tool to remove it, but no dice. Bought new exhaust and it was incredible how much better the car ran and the SOTP feel was very nice.
I'd say it's possible. I'd try 5L5's trick with the rags, or if you have access to a laser temp gauge hit the header tubes on each bank and see if they are cold up there. If so, its a tuning/mechanical problem.
- Jul 12, 2011
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ill try the rag trick and see what happens...also when the car is shut off from running for a little while the right pipe(the one that is hot) has smoke coming from it that looks like smoke from a flame you just put out on a candle..
and the car has magnaflows.
and the car has magnaflows.
- Jul 12, 2011
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If it is a clog, is there any easy way of unblocking it without taking the H-pipe out?
If something is blocking it enough that the exhaust cant make it thru, i would bet you are going to have to take the H pipe and the catback of the car to get it unclogged.
Seems like alot of work but if you do this first it will probably save you some time in the long run versus coming up with some backyard method of unclogging the pipe.
Seems like alot of work but if you do this first it will probably save you some time in the long run versus coming up with some backyard method of unclogging the pipe.
- Jul 12, 2011
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