At idle and not warmed up, my truck "pops" real bad out of exhaust. Intermittently. When I hear the pops I shut it off.
Any ideas of where I should start troubleshooting, or what to look for?
This is my 6.0 swap, just got tune today, but I was having the issue before the tune.
thx for any info.
86 C10 6.0/4l80e
loose rocker arm.,bad plugs.
mods:2004 sierra ext sb,20s ,big brake kit w,hawk pads,air bagged,2006 6.0 lq4 swap,vortec supercharged10psi, air to water intercooled w/ dual electric fans on it ,snow meth injection kit,60lbers, e-fans ,big radiator swap ,cam 218 /222 548/550 comp .hardened prs .1.85 comp roller rockers ,guideplates ,crane double springs,trans 4l65e built .pacesetter l/ts true duals w/x pipe and magnaflows,14 bolt rearend swap ,3.73s,aroemotive fuel pump system w/elec.fuel controller and bypass regulator a/n fittings, taylor 10.5s interceptor gauge,aem w/b a/f ,autometer boost/vac NELSON 93 OCTANE TUNED .
Plugs and wires are brand new, but I did check them anyway, look fine.
86 C10 6.0/4l80e
Get video with sound.
ok, i'll post up tomorrow or friday.
thx
86 C10 6.0/4l80e
Here's a vid. Hard to see, but it is from driver's side.
YouTube - Pop
86 C10 6.0/4l80e
looks like someone threw a firecracker at the camera, you can see a flash.
Not sure what would cause that.
you sure the plugs are all good? That looks like not all the gas is getting burned in the combustion chamber, and its getting set off in the exhaust by the cats, or maybe just heat.
Last edited by ff_jeff; 09-18-2008 at 04:01 PM.
blown out cats? Fuel vapors sit in there and then pop.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
ok,
i pulled the plugs again. I can now see some evidence.
When I pulled them I saw a difference.
http://i114.photobucket.com/albums/n...a/IMG_3747.jpg
sry for crappy pic, but the plug farthest to the right was clean, like it never fired. The other 3 had a little soot on them.
I tried troubleshooting, pulled fuel pump fuse, pulled wires and turned it over, did not see any spark from the plug that looked new, so I switched around plugs wires and changed coil packs, I saw spark one time on a different coil pack, is it me or is the spark that hard to see?
thx for any input.
86 C10 6.0/4l80e
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