1994 chevy blazer 4.3 vortec

bortzman4 · 09-17-2009, 10:34 AM

I have a 1994 chevy blazer 4.3 vortec, and having a fuel problem. changed fuel pump, fuel filter, still not getting any gas. I can spray fuel in carb and it runs like a top but as soon as I stop it dies. Someone had mention the crank sensor but can not find one anywhere. Please Help.

bradrhale · 09-17-2009, 07:55 PM

do you hear the fuel pump priming up when turning the key to the on position?? do you have power to the injectors??

bortzman4 · 10-01-2009, 12:52 PM

yes fuel pump was priming, checked the pressure it was to low. put another pump in and changed the injector, now starting up running but running rough and flooding itself. any suggestions??

bradrhale · 10-01-2009, 02:02 PM

what does the spray look like coming out of each injector?? should be a fine spray with no drips.

Crmzendrgone · 10-01-2009, 02:51 PM

# 1 FAIR - but weak
# 2 BAD - split spray pattern
# 3 BAD - split spray pattern
# 4 BAD - jetting on left side
# 5 GOOD
# 6 BAD - feathering at top of spray

Crmzendrgone · 10-01-2009, 02:52 PM

Granted that is a fuel rail but it gives you the idea.

09-17-2009, 10:34 AM	#1
bortzman4 Full Member Join Date: May 2009 Posts: 21	1994 chevy blazer 4.3 vortec I have a 1994 chevy blazer 4.3 vortec, and having a fuel problem. changed fuel pump, fuel filter, still not getting any gas. I can spray fuel in carb and it runs like a top but as soon as I stop it dies. Someone had mention the crank sensor but can not find one anywhere. Please Help.

10-01-2009, 02:51 PM	#5
Crmzendrgone Senior Member Join Date: Apr 2009 Location: Arizona Posts: 1,420	# 1 FAIR - but weak # 2 BAD - split spray pattern # 3 BAD - split spray pattern # 4 BAD - jetting on left side # 5 GOOD # 6 BAD - feathering at top of spray __________________ ENGINES PRODUCE POWER. MOTORS RECEIVE POWER. https://lastroundbestround.com/Home_Page.html

10-01-2009, 02:52 PM	#6
Crmzendrgone Senior Member Join Date: Apr 2009 Location: Arizona Posts: 1,420	Granted that is a fuel rail but it gives you the idea. __________________ ENGINES PRODUCE POWER. MOTORS RECEIVE POWER. https://lastroundbestround.com/Home_Page.html

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09-17-2009, 07:55 PM	#2
bradrhale Senior Moderator Join Date: Apr 2006 Location: Texas Posts: 8,021	do you hear the fuel pump priming up when turning the key to the on position?? do you have power to the injectors??

10-01-2009, 12:52 PM	#3
bortzman4 Full Member Join Date: May 2009 Posts: 21	yes fuel pump was priming, checked the pressure it was to low. put another pump in and changed the injector, now starting up running but running rough and flooding itself. any suggestions??

10-01-2009, 02:02 PM	#4
bradrhale Senior Moderator Join Date: Apr 2006 Location: Texas Posts: 8,021	what does the spray look like coming out of each injector?? should be a fine spray with no drips.