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AuthorTopic: back fireing out of carbs  (Read 685 times)

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Offline bobtail 2 6

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back fireing out of carbs
« on: January 03, 2009, 23:42:46 »
help needed ive got a 3.5 v8 on su carbs which runs fine at low revs but when you rev it it starts to back fire and fart out of the carbs
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Offline Range Rover Blues

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Re: back fireing out of carbs
« Reply #1 on: January 03, 2009, 23:50:08 »
Check the timing then do a compression test.  A V8 will happily idle on 6 cylinders or with numberous faults that only show up under load.
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Offline dod51e

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Re: back fireing out of carbs
« Reply #2 on: January 04, 2009, 12:29:16 »
Check the mixture as it may be running too lean.
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Offline bogie

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Re: back fireing out of carbs
« Reply #3 on: January 04, 2009, 15:28:24 »
If it was running fine before its most likely electrical.Check each lead on 2 the plugs.Could b knackered plug,lead,points ,condensor (if u have them) modual on elecy dizzy.
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Offline solihull-mick

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Re: back fireing out of carbs
« Reply #4 on: January 05, 2009, 11:25:55 »
hi mate make sure theres oil in the dash pots on top of the carbs as this can cause over fueling and popping back :wink:
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