• Hi Guest!
    You can help ensure that British Car Forum (BCF) continues to provide a great place to engage in the British car hobby! If you find BCF a beneficial community, please consider supporting our efforts with a subscription.
    There are some perks with a member upgrade!
    **Upgrade Now**
    (PS: Subscribers don't see this gawd-aweful banner
Tips
Tips

Carb/intake question

Share this page

bugedd

bugedd

Jedi Knight
Country flag
Offline
Things are apart this winter, putting on a header, and was looking at the carbs last night. Can anyone help me out with why one throttle body is clean, and the other is sooty?
carb.jpg
 
One carb running overly rich.
Carbs not balanced?
 
Wouldn't that suggest exhaust gases are entering the rear inlet port? Intake valve leak?
 
Do you have a tube running from the oil separator to the forward air-cleaner? Many do. That might send some oily air to that carb.
 
Last edited:
No tube to the air cleaner, running K&N's. Carbs are balanced pretty well, had a British car mechanic who owns a Bugeye check them out and make sure all is well. Maybe gasket leak from exhaust port to intake?
 
How's your compression across the 4 cylinders? I'm wondering if one or a pair of cylinders are burning a bit of oil and that is making its way (goodness knows how) back to your carb. Or is it old dirt and crud? Doug
 
That is odd almost like your running on only the one.
whats also odd is the butterfly shaft and screws.
almost looks like the shaft is 180 out
no taper hole for screws.
one time I had a jet some how take a hit and never completely seatedfrom the choke position
could check that the jet is free full movement
 
Back
Top