Rough Idle/popping noise in carb
December 31st, 2007, 9:53 PM
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Rough Idle/popping noise in carb
Hey all,my last post I could not get my 93 Chevy van started,well I messed with the timing a bit and got it started.I reset TDC and got the distributor in the right position.Plugs are new and gapped correctly,wires are new and routed correctly.Now it runs rough and theres a popping noise in the carb,not constantly but enough to make you notice it.Using the timing light the mark on the balancer moves back and forth a bit.I've got good vac.pressure.I don't know what else to check.
If you didn't read my last post this all comes after I blew a head gasket.I changed head gaskets,intake gaskets and valve cover gaskets. Thanks Darrin
1993 Chevy G-205.7 FI HEI ign.
If you didn't read my last post this all comes after I blew a head gasket.I changed head gaskets,intake gaskets and valve cover gaskets. Thanks Darrin
1993 Chevy G-205.7 FI HEI ign.
January 2nd, 2008, 4:10 PM
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RE: Rough Idle/popping noise in carb
That popping noise, sounds like valve issue. You might have to check the timing chain. Rotate the crank, back and forth, a little, by hand, while watching the dist. rotor. You shouldn't be able to move the crank very much, if any, without moving the rotor. The chain may have too much slack.
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