Ok so heres the deal. I have a 15 passanger chevy express 3500 with 81656 miles on it it was running great went to nashville tennessee filled up and about ten min later check engine light starts flashing missing like crazy checked code it says p0300 random miss fire changed the plugs wires soon the <NOBR id=itxt_nobr_0_0 style="FONT-WEIGHT: normal; FONT-SIZE: 100%; COLOR: darkgreen; FONT-FAMILY: inherit">fuel</NOBR> filter any idea this is a natural gas van. I carb spray all over the intake to ruel out a leaking intake any ideas would be great i have to get this thing back on the road thank you so much :-) <!-- / message --><!-- BEGIN TEMPLATE: ad_showthread_firstpost_sig --><!-- END TEMPLATE: ad_showthread_firstpost_sig -->

 

update checked the injectors all good seams like the rear 4 cylinders are almost dead??