87 iroc will not start

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87 iroc will not start - 9/2/2007 1:31:43 AM    swoosh5_98   Posts: 4 Joined: 9/2/2007 Status: offline i have a 87 iroc z28 with 305 tbi. Engine turns over but will not hit a lick. I'm getting fire and fuel ( but not sure if its enough). I replaced fuel filter, fuel pumps hums for a couple of seconds when i turn the key on. Engine turns over just fine. The car ran great before i covered it up and it sat for about a year.When you check the fuel pressure in the fuel rail should it shoot out or just flow out. I had a similar problem with a 4.3L V6 and it was the control module in the distributer. Does my iroc have something similar to that which tells the injectors to fire. Open to all comments and sugestions. thanks  Post #: 1

RE: 87 iroc will not start - 9/2/2007 9:45:11 AM    BigBoom360ci Posts: 58 Joined: 8/4/2007 Status: offline Check connections going to the coil for corrosion & if anything has came apart. Maybe the coil itself has gone bad over that period of time sitting also. Just check over everything electrical. Does it have vaccum advance timing? because after a while of sitting sometimes vaccum advanced timing parts in the distributor turn to crap from rust or whatever n starting it can be a pain. As for pressure in the fuel system it should shoot out unless theres a leak. _____________________________ Bulldogg Kustoms Est. 2006* Specialize in Mechanics, Autobody, Fabrication for American vehicles. I bring the thunder like a bombshell in your headset! 1970 Nova SS 360ci 1992 Ford F150 300ci 1998 Ram 4x4 318ci 1976 Cadillac Coupe Deville 50 (in reply to swoosh5_98) Post #: 2

RE: 87 iroc will not start - 9/2/2007 10:32:03 AM    swoosh5_98   Posts: 4 Joined: 9/2/2007 Status: offline I'm getting plenty of fire through all plug wires. The distributor is good as can be inside (no rust). The coil connections are fine and so are the connections to my injectors. My injectors are getting power but they are not spraying gas. (in reply to BigBoom360ci) Post #: 3

RE: 87 iroc will not start - 9/2/2007 2:48:46 PM    swoosh5_98   Posts: 4 Joined: 9/2/2007 Status: offline I had a typing error on my first post. My iroc has a 305 tpi not a tbi. What would kept my injectors from firing. I can get it to crank and run just until it burns the gas i shove down its throat. (in reply to swoosh5_98) Post #: 4

RE: 87 iroc will not start - 9/5/2007 1:12:46 PM    BigBoom360ci Posts: 58 Joined: 8/4/2007 Status: offline The power to your injectors is probably not gettin there so it wont open n spray fuel when needed. Get a volt meter n measure how much electricity there is even flowing through the wires. If not thing follow the wires back to where the begin so get a wire schematic n do some investigating. _____________________________ Bulldogg Kustoms Est. 2006* Specialize in Mechanics, Autobody, Fabrication for American vehicles. I bring the thunder like a bombshell in your headset! 1970 Nova SS 360ci 1992 Ford F150 300ci 1998 Ram 4x4 318ci 1976 Cadillac Coupe Deville 50 (in reply to swoosh5_98) Post #: 5

RE: 87 iroc will not start - 9/7/2007 11:19:26 AM    swoosh5_98   Posts: 4 Joined: 9/2/2007 Status: offline I know i used a test light on each injector and they have power but u think they may not be getting enough. (in reply to BigBoom360ci) Post #: 6

RE: 87 iroc will not start - 9/10/2007 9:49:41 AM    BigBoom360ci Posts: 58 Joined: 8/4/2007 Status: offline Yea they arent gettin enough juice then. _____________________________ Bulldogg Kustoms Est. 2006* Specialize in Mechanics, Autobody, Fabrication for American vehicles. I bring the thunder like a bombshell in your headset! 1970 Nova SS 360ci 1992 Ford F150 300ci 1998 Ram 4x4 318ci 1976 Cadillac Coupe Deville 50 (in reply to swoosh5_98) Post #: 7

RE: 87 iroc will not start - 11/6/2007 7:51:24 PM    73shark Posts: 2136 Joined: 4/17/2006 Status: offline Get a fuel pressure gauge and check the pressure at the fuel rail.  Unless your ECU is fried, I doubt that all the injectors would not be getting enuf current to fire.  If I remember right, pressure should be about 40-45 psi.  Would look it up but sold my service manuals with the car. Both of my '87 IROCs were 350s.  Didn't think they went back to 305s until later like around 1990. _____________________________ GM perf. exh, GM CAI, Superchips, Lund step tubes, billet grill, LED tails, Lloyd mats, rear console, GM flaps, silver calipers, black bow ties, tint (in reply to swoosh5_98) Post #: 8

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