Join Date: Jun 2001
Location: Ottawa, Ontario (Canada)
Last week I posted that I left a few shop rags in my manifold when I bolted my carb back on and fired up the engine. Most of them blew out the back but I now have 2 exhaust pipes on the passanger side that are glowing red hot in a matter of minutes (5-10) of starting up the car.
People had responded and said to post some results of some basic tests, so I thought I would.
Firstly, I ran the car again to see if the muffler was clogged but the exhaust "appears" to be equal on both sides.
Secondly, I removed the manifold and carb, but nothing there, I also peeked as far into the cylinders as possible but did not see anything obvious.
Thirdly, I ran a compression test and the cylinders seem consistent with the rest, 135-145 on both cylinders(The engine was rebuilt last year and it is still breaking in. My top readings on the other cylinders are 160.
Also, one of the effected plugs was wet with gas.
So I really don't know what to think. I thought the cheery red pipes ment that the cylinders were burning lean, so why the gas on the spark plug? And why no dropped compression readings?
I'm removing the header pipe tonight, just in case it's clogged, but I really doubt it. I don't think anything cloth could survive in that.
As a side note, I am wondering if this has been happening since the rebuild last summer, and the rag is just a coincidence? The engine has been running hot since the rebuild, but I just assumed that it was breaking in or had higher compression now.
What's the next step, taking off the head? What should I look for, or expect to see?