backfires on startup
Club Member
Joined: May 2007
Posts: 145,895
Likes: 821
From: 40 miles Northeast of Indy..
Could be a number of things.
Plugs, the way U start it or even how U shut her down, even the tune.
I've read in here sometimes those that use the kill switch have a backfire on starts.
Also those who rev is a few time before shutting her down get it.
Plugs may need replaced.
Tune may not be on the spot. Seems like those with The PC - F/M have it often. If so might need to tweet it.
Also might read through some of these to see if it helpsl
http://www.google.com/search?source=...w=1271&bih=628
Plugs, the way U start it or even how U shut her down, even the tune.
I've read in here sometimes those that use the kill switch have a backfire on starts.
Also those who rev is a few time before shutting her down get it.
Plugs may need replaced.
Tune may not be on the spot. Seems like those with The PC - F/M have it often. If so might need to tweet it.
Also might read through some of these to see if it helpsl
http://www.google.com/search?source=...w=1271&bih=628
Road Master
Joined: Feb 2011
Posts: 818
Likes: 0
From: Battle Creek, MI
I have had a backfire on startup just 2 times on my FI Heritage. Seems I narrowed it down to 2 things. Shutting it down quickly and not letting it settle at idle for a second first, especially when hot, and hitting the start button and expecting it to fire right away like it usually does, only to have it crank over a time or two, but I already had let off the starter button. That will get it to backfire every time. I think it pumped enough fuel to start, just didn't fire, so next fire up right away had extra shot of fuel. Again, only when it is hot.
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