White powder in exhaust
09-03-04, 07:49 PM
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White powder in exhaust
I have thin layer of white powder thats visible down my exhaust pipe. I think its because the car is running to lean. All I have is HKS Catback and HKS downpipe. Any ideas as to how to fix the problem? Any help would be great. Thanks.
09-03-04, 07:56 PM
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Is it on the outside of the pipe?
Either way it sounds like you may have a little coolant leak that is streaming down the underside of the car/and exhaust. Try looking at the heater hose and turbo coolant lines. There are 2 turbo and 2 heater hoses on the passenger side of the car.( In the turbo/firewall area)
how is the level of coolant? Any issues with that of late?
Either way it sounds like you may have a little coolant leak that is streaming down the underside of the car/and exhaust. Try looking at the heater hose and turbo coolant lines. There are 2 turbo and 2 heater hoses on the passenger side of the car.( In the turbo/firewall area)
how is the level of coolant? Any issues with that of late?
09-03-04, 08:16 PM
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i use 91 pump gas all the time. The white powder isnt visible on the tip or inside the tip, its just straight down inside the pipe. When I pull out my coolant dipstick, it's covered with a whole bunch of brownish sludge. I just changed the downpipe today and inside the stock one theres a little bit of the wite powder too. Car has been running fine though. Heres a pic of the exhaust pipe from the back of the car:
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09-04-04, 11:07 AM
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Originally Posted by saburo
But u guys think for sure the problem is the fuel?
09-05-04, 11:25 AM
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Originally Posted by cripsr6
Anthrax!
Lean stoich or coolant is getting into your exhaust.
BTW, if you wanna get rid of that nasty baffle in your HKS, I did a write up on getting it out. I was so proud of it, but I'm not sure anybody's really gotten inspired to do it by me. Check it out:
https://www.rx7club.com/showthread.p...ght=HKS+baffle
09-05-04, 12:04 PM
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I know I asked earlier but didn't see a response.. Are you having any coolant loss issues? Smelling any sweet aromas?
Speedking- I think the reason not a lot of people complain abot this is that not many take off the turbos to see the manifold ( i know that was someone else, not the original poster) or they don't look up the exhaust far enough.
Also usually Most people don't worry about things until There is evidence of a problem. ( kinda ties in with nobody looking into the exhaust)
Speedking- I think the reason not a lot of people complain abot this is that not many take off the turbos to see the manifold ( i know that was someone else, not the original poster) or they don't look up the exhaust far enough.
Also usually Most people don't worry about things until There is evidence of a problem. ( kinda ties in with nobody looking into the exhaust)
Last edited by BigIslandSevens; 09-05-04 at 12:09 PM.
11-08-04, 10:29 AM
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Originally Posted by saburo
When I pull out my coolant dipstick, it's covered with a whole bunch of brownish sludge.
i would check for cross-contamination (ie coolant in your oil, and oil in you coolant).
Last edited by JMunilla94RX7; 11-08-04 at 10:33 AM.
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