Hi,
I'm getting quite a lot of backfire on overrun, for example when going down a fairly steep hill in third gear. What could be the cause of this and is it typical? I am talking about popping and not the classic Morris Minor overrun noise or exhaust parp.
Thanks,
James
Backfire on overrun
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- Minor Legend
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Re: Backfire on overrun
Leak in exhaust?
Re: Backfire on overrun
0
Last edited by mobylette on Sun Sep 08, 2019 6:18 pm, edited 1 time in total.
Re: Backfire on overrun
+1 for exhaust leak. Cast an eye over the entire exhaust system and see if you can spot any witness marks to show where exhaust gases are escaping , usually at a joint.
Re: Backfire on overrun
check the timing probably slightly retarded
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- Minor Legend
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Re: Backfire on overrun
It could be any number of things in addition to those mentioned above - faulty plugs, wrongly set points gap, failing condensor, weak fuel mixture, sticking valves......to mention just a few. Are all leads and connections on the ignition system secure? Have you altered/adjusted/changed anything recently - which might be a clue?
Re: Backfire on overrun
Hi,
Thanks for the replies. I did change the head gasket a few months ago so the exhaust has been disturbed. I'll check the joints. The ignition and fuel systems have been checked over recently and are all in order.
Thanks,
James
Thanks for the replies. I did change the head gasket a few months ago so the exhaust has been disturbed. I'll check the joints. The ignition and fuel systems have been checked over recently and are all in order.
Thanks,
James