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Wo ist die Rennstrecke?
Join Date: Mar 2004
Location: St Johns, FL
Posts: 1,210
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Exhaust header color
I just pulled my header to coat them and noticed that the right side (4-5-6) header had a frosty white exhaust coating while the left side was black. Can this be a tuning problem? It seems odd that all three stacks are colored at the same time.
Could the injector bank have a problem in the wiring? Could the electromotive DFU's be messing with that side? The car runs great - idles and accels just fine. AFR's are nailed. Thanks |
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Wo ist die Rennstrecke?
Join Date: Mar 2004
Location: St Johns, FL
Posts: 1,210
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It seems to be a fuel delivery issue - where is the fuel being introduced and on which side of the regulator.
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Super Moderator
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What fuel are you running.
Brownish White is good if you are running racegas... Means overly lean on regular unleaded.
__________________
Chris ---------------------------------------------- 1996 993 RS Replica 2023 KTM 890 Adventure R 1971 Norton 750 Commando Alcon Brake Kits |
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Wo ist die Rennstrecke?
Join Date: Mar 2004
Location: St Johns, FL
Posts: 1,210
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The color is off-white and will not rub off when touched (it reflects an environment of high temp). The other side is carbon black and it barely rubs off when touched - what I would call normal using pump gas.
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Wo ist die Rennstrecke?
Join Date: Mar 2004
Location: St Johns, FL
Posts: 1,210
|
Here is a pic of the exhaust port with streaking on the valve.
![]() Here are the plugs from #4 (left) and #1 cylinders for comparison. ![]() Comments? |
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Super Moderator
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The plugs look pretty good... Again, seems like the left bank is lean... Check your fuel rail on that side maybe?
__________________
Chris ---------------------------------------------- 1996 993 RS Replica 2023 KTM 890 Adventure R 1971 Norton 750 Commando Alcon Brake Kits |
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