89 350 wont start,, runs like crap - The 1947 - Present Chevrolet & GMC Truck Message Board Network

66skylarkpost · 12-16-2012, 01:32 PM

Ive had my 89 silverado for years, had a few problems over the time. Yet im confused. Ran fine other night then puked and gasped and wouldnt accelerate with out stubbling and popint out exhaust. Like low fuel pressure. I hooked my fitting and guage, got aroubd 8psi . So i lifted the bed ,put in new pump. Now i get 10? All it would do is kick and kick trying to start. It ran briefly last night but rough. Today, jus kick and kick trying to start. Its a .030 over 350, holley 670 tbi, accell coil, headers, some head work, a billet msd knockoff dizzy . Im goin to maybe put a stock tbi on it, check ignition module, ive never had ovr 10psi with two different pumps with the holley, is there a way to bump up thie regulator ? No codes are being stored thats why im thinking tbi unit. The injectors do spray, throttle plates are wet. If i prime it, its only worse.... :-(
Posted via Mobile Device

66skylarkpost · 12-16-2012, 02:05 PM

pic

66skylarkpost · 12-16-2012, 04:41 PM

could it really of been that simple ? lol as i was swaping ignition modules with a spare and testing the pick up , i found the coil wire to be burnt on the coil end. fixed .oh well , atlest its got a new fuel pump now . only prob is that now my brake light is lightly on ?

12-16-2012, 01:32 PM	#1
66skylarkpost Registered User Join Date: Mar 2006 Location: kearney,nebraska Posts: 443	89 350 wont start,, runs like crap Ive had my 89 silverado for years, had a few problems over the time. Yet im confused. Ran fine other night then puked and gasped and wouldnt accelerate with out stubbling and popint out exhaust. Like low fuel pressure. I hooked my fitting and guage, got aroubd 8psi . So i lifted the bed ,put in new pump. Now i get 10? All it would do is kick and kick trying to start. It ran briefly last night but rough. Today, jus kick and kick trying to start. Its a .030 over 350, holley 670 tbi, accell coil, headers, some head work, a billet msd knockoff dizzy . Im goin to maybe put a stock tbi on it, check ignition module, ive never had ovr 10psi with two different pumps with the holley, is there a way to bump up thie regulator ? No codes are being stored thats why im thinking tbi unit. The injectors do spray, throttle plates are wet. If i prime it, its only worse.... :-( Posted via Mobile Device __________________ '70 k-10 longbox- mid 70's drivetrain 350/350 487x heads 10.1:1 flowmasters ,35's 3.73's auburn posi ,rear shackle flip. '72 short stepside U.S. forestry truck, '73 455 buick,400 turbo,dropped 2"-4 1/4" ,3.07 posi,:'89 silverado 1500 ,OK truck ,5.7 holley tbi ,trick 700r4 3.07 auburn posi ,and my '66 skylark ,'73 centurion and my '84 monte carlo imca stock car

12-16-2012, 02:05 PM	#2
66skylarkpost Registered User Join Date: Mar 2006 Location: kearney,nebraska Posts: 443	Re: 89 350 wont start,, runs like crap pic Attached Images __________________ '70 k-10 longbox- mid 70's drivetrain 350/350 487x heads 10.1:1 flowmasters ,35's 3.73's auburn posi ,rear shackle flip. '72 short stepside U.S. forestry truck, '73 455 buick,400 turbo,dropped 2"-4 1/4" ,3.07 posi,:'89 silverado 1500 ,OK truck ,5.7 holley tbi ,trick 700r4 3.07 auburn posi ,and my '66 skylark ,'73 centurion and my '84 monte carlo imca stock car

12-16-2012, 04:41 PM	#3
66skylarkpost Registered User Join Date: Mar 2006 Location: kearney,nebraska Posts: 443	Re: 89 350 wont start,, runs like crap could it really of been that simple ? lol as i was swaping ignition modules with a spare and testing the pick up , i found the coil wire to be burnt on the coil end. fixed .oh well , atlest its got a new fuel pump now . only prob is that now my brake light is lightly on ? Attached Images __________________ '70 k-10 longbox- mid 70's drivetrain 350/350 487x heads 10.1:1 flowmasters ,35's 3.73's auburn posi ,rear shackle flip. '72 short stepside U.S. forestry truck, '73 455 buick,400 turbo,dropped 2"-4 1/4" ,3.07 posi,:'89 silverado 1500 ,OK truck ,5.7 holley tbi ,trick 700r4 3.07 auburn posi ,and my '66 skylark ,'73 centurion and my '84 monte carlo imca stock car



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