droppedchev

iTrader: (5)

well i checked the valve springs those are fine i got those junk msd wires they dont even feel like there on the spark plug good enough might just buy some 10mm wires to see if that fixes it when it revs up its fine those its more like a little soft pop

droppedchev

iTrader: (5)

well still having the problem put some new wires on didnt fix it i think i sucked something up and its clogging my injectors so im going to run some injector cleaner threw it hopfully that fixes it if not straight to race fuel

droppedchev

iTrader: (5)

well im getting sick of this frigin problem its driving me nuts i think its that walbro fuel pump i did run it down past 1/4 tank maybe that was the problem burnt the pump and that was the first time ive done it and now this

00Silv4.8

iTrader: (10)

if the pump burnt from a 1/4 tank you have issues. And I think you have bigger issues than a clogged injector or something. I would think popping would be from over fueling. I could be just spit balling but maybe check timing tables and fueling at idle?

droppedchev

iTrader: (5)

it was fine before i had no problem with it the tank went down to like 1/8 maybe less

droppedchev

iTrader: (5)

it sounds like its missing im going to go get a fuel pressure guage tomorrow and see what it is its only at an idle if i take if off an idle its perfectly fine

droppedchev

iTrader: (5)

i got a question for ya my long tubes i put on i noticed that is leaking pretty bad where it meets with the y pipe you think could be the problem

kingots2004

could it be a vac leak?

Sc00by

I would say ignition issues BUT you really start to notice ignition issues when you put a load on the engine (ie: speeding up, pulling trailer etc.) Your only having issues at idle. So I would rule out ignition.

Fuel pump doesn't make since if its only poping at idle. If you had popping, chugging, or just wanting to shut off under acceleration or anything off idle I would then check out the fuel system. But your only having issues at idle. So I would rule out Fuel pump.

Your computer can't just forget what tune you used and then guess at how to start and run your truck so I would put tuning out of the question. I woudn't worry about tuning issues unless you changed your tuning and THEN started having problems.

I would check out your leaky y-pipe. Its the simplest to fix out of the above listed. Just loosen up and re-tighen. If that doesn't work and it still leaks pick up some O2 sensor safe RTV and make a better gasket. I would recomend working on a cool or cold exhaust and letting the RTV (if needed) to dry over night or at least for a few hours before testing it out.