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Did you get the memo?
Join Date: Mar 2003
Location: Wichita, KS
Posts: 32,631
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Weber Guys, This Ones For You
I had my airbox cover off of my 70T yesterday while changing the plugs, and noticed that the venturis (air horns?) of my Webers on the left cylinder bank seem to have a carbon build-up on them, but the right bank is spotless. Is this indicative of a rich running condition, something else, or just that the PO cleaned the right bank, but not the left?
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‘07 Mazda RX8-8 Past: 911T, 911SC, Carrera, 951s, 955, 996s, 987s, 986s, 997s, BMW 5x, C36, C63, XJR, S8, Maserati Coupe, GT500, etc |
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12-25-2003, 06:09 PM
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Registered
Join Date: Jul 2001
Location: Springfield, MO
Posts: 1,422
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My guess is that the former PO ran out of spray-on carb cleaner.
Where you see the real carbon build up is underneath the throttle plates! Just thinking about this, check to see if that carb might have been on fire. Hate to tell this about the carbs, but fires are plentiful in them. David Duffield |
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12-25-2003, 08:32 PM
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Yeah, sounds like backfiring and/or fire to me ......
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12-26-2003, 05:49 AM
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Did you get the memo?
Join Date: Mar 2003
Location: Wichita, KS
Posts: 32,631
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Anything else I could look at to figure this one out, beside totally disassembling the carb?
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‘07 Mazda RX8-8 Past: 911T, 911SC, Carrera, 951s, 955, 996s, 987s, 986s, 997s, BMW 5x, C36, C63, XJR, S8, Maserati Coupe, GT500, etc |
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12-26-2003, 06:38 AM
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You do not have permissi
Join Date: Aug 2001
Location: midwest
Posts: 39,985
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You can run it and see if it is spitting out the top. Irregular popping in the carbs usually equals lean, in the exhaust=rich or misfire.
A lazer pyrometer will tell if one bank of headers is running hotter(lean). Also if you put propane in the stacks and the idle raises, it needed more gas.
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Meanwhile other things are still happening. |
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12-26-2003, 08:17 AM
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1971 Porsche Targa 2.5L
