Glowing Header with Weber 45
06-21-05, 01:59 AM
#1
Glowing Header with Weber 45
Well I have searched and I know this could be from my engine being too rich, too lean, too advanced or too retarded... Where should I start trouble shooting or does the weber 45 increase the exhaust temperature that much? I got the glow from the header after running it for about 2 minutes at 5000 rpms. I don't want to damage anything by ignoring the fact that it is that hot...
Also I can't really check the timing and make sure its exact, I replaced the engine just a short while ago and did not put the front pulley back on properly. The way the pulley is lined up is so that the front rotor was inline with the spark plug holes then I mounted the pulley so that the leading timing mark was pointing at the indicator pin. It is very possible that the distributor could be off by one tooth but I would not imagine that it would run so well if it was. Is this the proper way to realign the front pulley with the timing marks?
The car ran perfectily except it did not idle (idled at 2000 rpms), Wackyracer has informed me that this may be because of my idle circuits being clogged so Im going to take the weber all apart and clean it in hopes of it making a difference. The car reved very smoothly and quickily up to the redline without hesitation so I almost have doubts that it is running too rich, but I was running about 4 psi of fuel (note this is the only way I was able to get it to run). Maybe the car is running too lean? But how can it when it is running 4 PSI of fuel? During this period my inline fuel pressure gauge stopped working (explain that it only works for like 2 minutes then stops) so one problem after another.
I am planning on rewiring the fuel pump, regulating the pressure down to 3psi, getting new plugs, cleaning the carb out, getting a proper filter for it, get proper idle jets and hopefully I can get it back on the street.
Thanks for any input!
Don't mean to be annoying with all these weber 45 problems threads ive started im just gathering as much information as I can, so far I have had nothing but troubles and setbacks...
Dan_s_young
Also I can't really check the timing and make sure its exact, I replaced the engine just a short while ago and did not put the front pulley back on properly. The way the pulley is lined up is so that the front rotor was inline with the spark plug holes then I mounted the pulley so that the leading timing mark was pointing at the indicator pin. It is very possible that the distributor could be off by one tooth but I would not imagine that it would run so well if it was. Is this the proper way to realign the front pulley with the timing marks?
The car ran perfectily except it did not idle (idled at 2000 rpms), Wackyracer has informed me that this may be because of my idle circuits being clogged so Im going to take the weber all apart and clean it in hopes of it making a difference. The car reved very smoothly and quickily up to the redline without hesitation so I almost have doubts that it is running too rich, but I was running about 4 psi of fuel (note this is the only way I was able to get it to run). Maybe the car is running too lean? But how can it when it is running 4 PSI of fuel? During this period my inline fuel pressure gauge stopped working (explain that it only works for like 2 minutes then stops) so one problem after another.
I am planning on rewiring the fuel pump, regulating the pressure down to 3psi, getting new plugs, cleaning the carb out, getting a proper filter for it, get proper idle jets and hopefully I can get it back on the street.
Thanks for any input!
Don't mean to be annoying with all these weber 45 problems threads ive started im just gathering as much information as I can, so far I have had nothing but troubles and setbacks...
Dan_s_young
Last edited by Dan_s_young; 06-21-05 at 02:02 AM.
06-28-05, 06:49 AM
#3
Bump from the dead, found this looking for something else, but...
I would say to check the mixture and timing because when I had mine, it ran with no trailing ignition for a few 30 seconds or so (forgot to hook up a wire when doing DLIDFIS), and the header was bright red after a short period of time. Although, I would almost say that if it doesnt start glowing until after youve run it "hard" for a couple minutes, its most likely mixture. Do you hear any "knocking" under load? I could with mine when it was too lean, which also resulted in a lightly glowing manifold. That was with a Holley regulator at 3 PSI and a Carter pump.
~T.J.
I would say to check the mixture and timing because when I had mine, it ran with no trailing ignition for a few 30 seconds or so (forgot to hook up a wire when doing DLIDFIS), and the header was bright red after a short period of time. Although, I would almost say that if it doesnt start glowing until after youve run it "hard" for a couple minutes, its most likely mixture. Do you hear any "knocking" under load? I could with mine when it was too lean, which also resulted in a lightly glowing manifold. That was with a Holley regulator at 3 PSI and a Carter pump.
~T.J.
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