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#1
10-25-2009, 02:33 PM
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98 G C backfiring at aprox 1300rpm
 i have just replaced cam in jeep. now it is starting hard. starts to backfire at aprox. 1300 rpms. it idles great but once rpms go up, backfiring starts. oh its a 4.0.
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#3
10-25-2009, 09:23 PM
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Re: 98 G C backfiring at aprox 1300rpm
Another thing to check if the distribitor is set right.You cannot do it with a timing light which the timing is not adjustable.There is a hole you stick in a small pin,screwdriver or anything small
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#4
10-26-2009, 07:10 AM
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Re: 98 G C backfiring at aprox 1300rpm
whare is this hole located and what is its purpose? ok found the hole and mark is on. ok i just got done pissing with this thing again for another 3 hours. i checked double checked triple checked and quadruple checked timming marks. marks are on, distibutor is on. last nite i had it idling but tonight i cant even get it to pop off. i know al marks are on but still not running please help before i pour gas on it and throw a match on it.
Last edited by mick42; 10-26-2009 at 08:41 PM.
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#5
10-27-2009, 12:15 PM
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Re: 98 G C backfiring at aprox 1300rpm
If you checked the distributor when the timing marks were lined up I would check the plug wires with a wiring diagram its easy to install them on the wrong plug.
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#6
10-27-2009, 08:55 PM
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Re: 98 G C backfiring at aprox 1300rpm
hey just so everyone knows i found the problem. the cam that i got had the pin 180 deg off. i turned the cam with the gears off 180 deg. set the distributor (a couple of times) and it was running like new. the time i had it running at idle i just had the distributor off by one cogg. THANK YOU EVERYONE FOR HELPING ME OUT. now i dont have to burn it. THANK YOU
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#7
10-28-2009, 05:34 PM
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Re: 98 G C backfiring at aprox 1300rpm
Now all you need is a scan tool to fine tune (sync) your fuel injection timing.
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