Cylinder 3 header getting too hot
05-17-2014, 06:58 PM
#1
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Cylinder 3 header getting too hot Guys,
What are your thoughts. If idling for like 15 minutes my cats start getting cherry red. Cylinder 3s header pipe is getting to like 450-500 degrees. 5 is like 350. And 6 is like 300. All others stick around 200ish.
Lt1 383 fresh build. NGk tr55 and also tried tr6. Already checked valve adjustment, wires, changed plugs, and moved injectors around.
I was trying to check vacuum leaks but even propane into an uncapped vacuum port made no difference. Hmm?? Would a vacuum leak only affect a particular cylinder anyway?
Thanks
Doug
What are your thoughts. If idling for like 15 minutes my cats start getting cherry red. Cylinder 3s header pipe is getting to like 450-500 degrees. 5 is like 350. And 6 is like 300. All others stick around 200ish.
Lt1 383 fresh build. NGk tr55 and also tried tr6. Already checked valve adjustment, wires, changed plugs, and moved injectors around.
I was trying to check vacuum leaks but even propane into an uncapped vacuum port made no difference. Hmm?? Would a vacuum leak only affect a particular cylinder anyway?
Thanks
Doug
05-17-2014, 07:46 PM
#2
A leaky FPR?? Not sure how that would only effect #3 though.
Guys,
What are your thoughts. If idling for like 15 minutes my cats start getting cherry red. Cylinder 3s header pipe is getting to like 450-500 degrees. 5 is like 350. And 6 is like 300. All others stick around 200ish.
Lt1 383 fresh build. NGk tr55 and also tried tr6. Already checked valve adjustment, wires, changed plugs, and moved injectors around.
I was trying to check vacuum leaks but even propane into an uncapped vacuum port made no difference. Hmm?? Would a vacuum leak only affect a particular cylinder anyway?
Thanks
Doug
What are your thoughts. If idling for like 15 minutes my cats start getting cherry red. Cylinder 3s header pipe is getting to like 450-500 degrees. 5 is like 350. And 6 is like 300. All others stick around 200ish.
Lt1 383 fresh build. NGk tr55 and also tried tr6. Already checked valve adjustment, wires, changed plugs, and moved injectors around.
I was trying to check vacuum leaks but even propane into an uncapped vacuum port made no difference. Hmm?? Would a vacuum leak only affect a particular cylinder anyway?
Thanks
Doug
