1999 Chevy Blazer Turns over doesnt fire

Tiny
KS6674
  • MEMBER
  • 1999 CHEVROLET BLAZER
  • 6 CYL
  • 4WD
  • MANUAL
  • 76,000 MILES
1999 Blazer 4.3L, 5 spd, 4wd. Sat for about 6 months in NY. Had a hole in the gas tank and a broken fuel pump. So 2 weeks or so ago I replaced the tank with a used one and put a brand new Fuel pump in. Blazer turned over and drove fine. It had to sit for a short period of the last 2 weeks or so. Today I climbed in and went to crank it, the battery was almost dead and it would turn over just never fired. I hooked the battery up to my Dakota with jumper cables, So I was definately gettin enough power for crank. However It would just turn over and over never fire. I disconnected the fuel filter and turned the key and had a nice flow of fuel from there. At no point did I ever smell gas under the hood while I was cranking, (and believe me I tried to flood it!) Any one have any ideas before I start tearin **** apart. In the beginning I was thinking Possibly MAP sensor, Is there a distributor on the vortec 6 cyl? EGR, Plugs? Where should I begin? Any answers or ideas would greatly be appreciated! Thanks Kevin!
Thursday, December 18th, 2008 AT 2:03 AM

2 Replies

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Get the battery charged-up. Then, if you can't check for codes, do some of the basic tests.

Have a helper crank it, while you check for spark at the plugs. You can pull a plug boot, stick a known good plug in the boot, ground metal part of plug to metal part of engine, have helper crank the engine, watch for spark at the tip of the plug. You also use a spark tester, they sell them at the auto stores.

If you have good spark everywhere, check fuel pressure, you need a gage for that. The spider type fuel systems are known for problems, but, no need jumping the gun.
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Thursday, December 18th, 2008 AT 10:59 AM
Tiny
R3ZZ1N
  • MEMBER
  • 1 POST
I would prolly start with checking the rotor to see if its cracked or broken. Or take one of the wires off a plug and checkin for spark?Or maybe puttin a little gas in the throttle body or carb? I have an 89 but mine just cranks really slow.
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Thursday, December 18th, 2008 AT 11:23 AM

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