 #$%@ Carbs... |
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| yeahmag |
 Oct 13 2010, 02:45 PM
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Advanced Member  Group: Members Posts: 2,455 Joined: 18-April 05 From: Pasadena, CA Member No.: 3,946 Region Association: Southern California 
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Not getting enough fuel to one cylinder at idle. Did all the normal tricks:
* checked idle jet (clean) * ran idle mixture screw in and out * removed idle jet and mixture screw and blew out * removed idle jet and "plugged the hole" with finger (this should give me a *very* rich mixture, only got down to 15:1 or so) So, it's time to pull the carb. I suspect something is blocking the mixture screw area... Of course I have a race this weekend. Sigh. |
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| john rogers |
Oct 13 2010, 11:02 PM
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Senior Member Group: Members Posts: 1,525 Joined: 4-March 03 From: Chula Vista CA Member No.: 391 |
How long did the car sit? If it had pump gas and was not run at least weekly to get good and hot then the additives that we now have to put up with in pump gas has turned to snot. Generally it is in places you can not see and needs boiling to clean out. There are two ways to cure this, and in your case just one and that is a complete rebuild including a good tank cleaning with carb solution. Use new rebuild kits and THEN the second thing is to run the car at least weekly until good and hot so the carbs will self clean. You can add some Marvel Mystery Oil to the gas to slow things down but it will happen eventually. If the car is mainly a racer then race gas will help but even 100 octane unleaded has some goop in it now and leaded is even worse. I learned this about 10 years ago when my vintage race car was sitting for weeks at a time and ran crappy when started and my mentor straightened me out about Webers.
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Posts in this topic
yeahmag #$%@ Carbs... Oct 13 2010, 02:45 PM
Root_Werks Just for giggles and because it's cheep anyway... Oct 13 2010, 03:32 PM r_towle Check your valve settings on that cylinder and do ... Oct 13 2010, 04:02 PM Vacca Rabite I second trying a new spark plug or even just clea... Oct 13 2010, 04:58 PM yeahmag It's got a Mallory 6AL, Bosch Blue Coil, and ... Oct 13 2010, 05:04 PM Brett W Sounds like trash. PUll the carbs off and take th... Oct 13 2010, 07:18 PM jmill Vacuum leak? Oct 13 2010, 07:58 PM tscrihfield Not questioning your ability to inspect the Jets, ... Oct 13 2010, 08:04 PM yeahmag OK. Popped the carb off and R&R'ed the idl... Oct 13 2010, 09:10 PM yeahmag I should mention that I also checked the screen at... Oct 13 2010, 09:39 PM Vacca Rabite Check you timing too.
I have been fighting a stumb... Oct 14 2010, 06:26 AM yeahmag Not the fuel pump. Steady 2.5 psi no matter what..... Oct 14 2010, 07:55 PM yeahmag I think we have a winner....
john rogers - step r... Oct 14 2010, 10:27 PM john rogers You can try spray cleaner BUT you'll end up be... Oct 15 2010, 12:56 PM indianmort if it has not been mentioned earlier, fill tank wi... Oct 15 2010, 01:48 PM
Razorbobsr
Not getting enough fuel to one cylinder at idle. ... Oct 15 2010, 02:46 PM |
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