Backfire and miss fire

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Taffy
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Joined: Sat May 03, 2014 12:39 pm

Backfire and miss fire

Post by Taffy » Tue Nov 06, 2018 5:24 pm

After running well my van is backfiring and miss firing badly. Flames out of the house exhaust. I’ve checked the compression in each cylinder and all is good at around 9. However front two plugs were very black whilst the back two were fine. Any thoughts.
Taffy


slippy8v
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Re: Backfire and miss fire

Post by slippy8v » Tue Nov 06, 2018 6:43 pm

Points or electronic distributer, mine did the same running Pertonix before if failed, now back on points

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vwJim
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Re: Backfire and miss fire

Post by vwJim » Tue Nov 06, 2018 7:43 pm

Compression is 9 what? Bar?

Start with the basics, timing, valve clearances, carb setup etc.
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Topic Author
Taffy
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Posts: 197
Joined: Sat May 03, 2014 12:39 pm

Re: Backfire and miss fire

Post by Taffy » Thu Nov 08, 2018 8:33 pm

Many thanks. Changed the points and condenser - job done

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