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adriandela510
Samba Member
Joined: September 11, 2014
Posts: 30
Location: Berkeley
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 Posted: Thu Aug 17, 2017 5:46 pm Post subject: Misfire/bucks when driving with the lights on. |
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Hello,
I have a 1975 fuel injected bus. When driving with the headlights on and reaching high RPMs the engine seems to misfire/buck. Could this be a short in the headlight wiring system. And if so dose any one have any ideas where I could find the grounds for that system?
Thanks!
-Adrian |
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Joey
Samba Member
Joined: August 12, 2005
Posts: 5366
Location: Nova Scotia - Canada
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| Posted: Thu Aug 17, 2017 6:01 pm Post subject: Re: Misfire/bucks when driving with the lights on. |
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Sounds like a bad ground. Do you have the chassis to transmission ground strap? I would start at the battery and REMOVE and CLEAN the connections including the ground to the body.
_________________
Joey
‘60 Kombi - '74 Bus - '79 Panel - '65 Beetle |
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busdaddy
Samba Member
Joined: February 12, 2004
Posts: 51130
Location: Surrey B.C. Canada, but thinking of Ukraine
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| Posted: Thu Aug 17, 2017 7:59 pm Post subject: Re: Misfire/bucks when driving with the lights on. |
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Could be plenty of things, a drive with a volt meter wired in to the fuse box or plugged into the cig lighter would say alot.
_________________
Rust NEVER sleeps and stock never goes out of style.
Please don't PM technical questions, ask your problem in public so everyone can play along. If you think it's too stupid post it here
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Слава Україні! |
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Tcash
Samba Member
Joined: July 20, 2011
Posts: 12844
Location: San Jose, California, USA
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| Posted: Sat Aug 19, 2017 8:42 am Post subject: Re: Misfire/bucks when driving with the lights on. |
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On the back of the headlight buckets. Behind the kick panels bellow the dash, on both sides.
Disconnect the battery ground and clean the connections on both ends of the battery cables. Clean the ground strap on both ends that is connected to the transmission.
Clean the ground terminals under the plenum.
Good luck
Tcash |
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