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80 4.7S Surging back and forth ?
https://forums.tipec.net/viewtopic.php?f=27&t=11891
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Author:  kenthepipe [ Mon Nov 07, 2011 5:35 pm ]
Post subject:  80 4.7S Surging back and forth ?

Any ideas what causes the problem of surging back and forth at about 1300 to 2000 rpm,s it,s the sort of sensation you get when in the wrong gear for a given situation ( although I,m not) manual box. ?

Author:  Brett928S2 [ Mon Nov 07, 2011 11:23 pm ]
Post subject:  Re: 80 4.7S Surging back and forth ?

Hi Ken :)

Its got to be either an air leak or a vacuum leak...

Is the tickover steady at around 800 rpm.. ?

All the best Brett :)

Author:  Brett928S2 [ Tue Nov 08, 2011 12:34 am ]
Post subject:  Re: 80 4.7S Surging back and forth ?

Hi :)

I just saw your other post on Rennlist..

You are kidding about the plugs being 5 years old I HOPE ?

If not...then CHANGE the plugs, both dizzy caps and both rotor arms...now...lol


Then see what its like...also when were the fuel filter and air filter last changed ? not looked at but actually changed ?

All the best Brett :)

Author:  kenthepipe [ Tue Nov 08, 2011 9:51 am ]
Post subject:  Re: 80 4.7S Surging back and forth ?

yes I guess that I should also eliminate those, thought there might be a common denominator :?

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