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Thanks for the info the problem with the truck is it idles really rough (shaking) and you can hear a miss through the exhaust but its not a hard miss it is intermittant there are no fouled plugs and no vac leaks it pulled 25 inches at idle so im stumped

I rechecked the fuel pressure with a better gauge and got 28-29 at idle and 39 at idle with the fpr vacuum unpluged I guess this is still to low does any body know which pin to ground on the test plug and exactly what the fuel pressure should be thanks

Thanks for the info fellas

I've been chasing a intermitant miss so I started by changing my plugs which were white from a lean condition so I changed the fuel filter and ran some seafoam through the tank then checked fuel pressure I get 30 psi with key on engine off then 20 psi at idle and somthing like 30 when I hit the...

I'm having this exact same problem with a aftermarket pioneer headunit (it was in the truck when I bought it 2 mons ago so I have no idea how well it was wired ) but it worked fine until yesterday so tonight I was riding with stereo still on and no sound and ran over some rail road tracks and...