1999 Chevy Blazer Engine starts and then stops

GLOBAL16

MEMBER
1999 CHEVROLET BLAZER
6 CYL
4WD
AUTOMATIC
90,000 MILES

Hi, I have just rebuilt a chevy blazer 4.3 v6 engine, due to blown head gasket. Everything has been put back as it was. Problem is the engine fires up and then dies, I have put a little gas into the throttle body and it runs 6 or 7 seconds and then dies. Fuel pressure is good, spark to each plug is good.I have timed it as the book says, rotor pointing to the number 6 stamped on the inside of the distributor body and number one cylinder at tdc, ie both valves cllosed on number one cylinder, all electrical connections are good.I dont have a computer. What could be the problem please?

4 Replies

RASMATAZ

MECHANIC
75,992 POSTS

Do you hear the fuel pump when you turn key to run?

.I dont have a computer.

What's pulsing the fuel injectors if its a TBI system- Recheck the fuel pressure and comeback with the readings

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Monday, July 21st, 2008 AT 4:57 PM

GLOBAL16

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3 POSTS

Yes I can hear the fuel pump working, and fuel is being delivered. It has got a CSEFI system.

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Monday, July 21st, 2008 AT 5:05 PM

RASMATAZ

MECHANIC
75,992 POSTS

Fuel is being delivered-hook up a fuel pressure gauge and give me the fuel pressure readings.

You sure the rotor is suppose to be pointing to no.6 or to no.1 @ TDC

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Tuesday, July 22nd, 2008 AT 2:40 AM

GLOBAL16

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3 POSTS

Thanks for your reply, its not the number 6 plug wire, its a number on the lip of the distributor. Anyway thanks for all your replies but I have solved the problem. It was the key fob, if the battery gets low it wont start the car. You have to press unlock lock it again and then start the car. It now runs like a dream. Im from England by the way!
Thanks again, regards Tom.

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Tuesday, July 22nd, 2008 AT 12:52 PM