TheBurningRed
Forum Newbie
Posts: 45
Loc: Southern California
Reg: 04-28-12
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07-05-12 10:29 AM - Post#2244730
We live in California, took the truck to have a SMOG pre-test done on it, and it ran just fine. Failed the pre-SMOG, and we were told one of the areas it failed could be fixed (most of the time) with a tune-up.
Changed the air filter, plugs, plug wires, distributor cap, and rotor. Tried to start it, no success. Any advice as to where to start to try and trace this issue down? My '88 C1500 did the same thing, and I ended up replacing the Ignition Control Module to see success in getting it to start, so I'm wondering if that might be a good idea here or not. I can't help but think to want to replace the ignition control module or the ignition coil, but I want to know if I'm on the right track or not. Any advice/help would be greatly appreciated.
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 gchemist
Senior Chevytalk Moderator
Posts: 20830
Loc: Austin, TX 78748
Reg: 05-09-00
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07-05-12 02:00 PM - Post#2244793
In response to TheBurningRed
The ignition module can be tested at the parts store. Check for spark when you crank it. If you don't see a spark, the ignition coil is bad. Remove a spark plug wire. Insert a long screw driver or something metal. Lay it on the frame or exhaust. Crank it. You should see sparks jump from the screwdriver to the frame/manifold.
Check the electrical connections.
'83 Silverardo XST - ZZ4 powered
'96 GMC Jimmy LS |
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SleeperSS
Senior Member
Posts: 1820
Loc: Spanaway, Wa
Reg: 10-17-04
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07-05-12 03:01 PM - Post#2244818
In response to TheBurningRed
If it worked before the tune up! I'd check the plug wires no matter how careful you thought you were.
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TheBurningRed
Forum Newbie
Posts: 45
Loc: Southern California
Reg: 04-28-12
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07-05-12 04:14 PM - Post#2244841
In response to SleeperSS
Alright, thanks guys. Also, curious. What's the firing order on this particular motor? Our book on it reads 1-2-3-4-5-6, but one of the guys at the O'Reilly we were just at says that that's incorrect. Everything I've found online says that it is.
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gchemist
Senior Chevytalk Moderator
Posts: 20830
Loc: Austin, TX 78748
Reg: 05-09-00
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07-05-12 05:45 PM - Post#2244885
In response to TheBurningRed
Check the intake. Unlike a V8, #1 is on the passenger side. Same goes for distributor. #1 should be pointing to the cylinder.
'83 Silverardo XST - ZZ4 powered
'96 GMC Jimmy LS |
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TheBurningRed
Forum Newbie
Posts: 45
Loc: Southern California
Reg: 04-28-12
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07-07-12 12:15 PM - Post#2245463
In response to gchemist
Yes. #1 is indeed on the passenger side, unlike the V8 as well as the bigger motors they put in the same Blazers.
Got it to start. Ended up pulling the distributor out due to issues getting the new off, swapped that rotor for ANOTHER new rotor. Got the motor to TDC, dropped the distributor in with a new rotor, everything lined up right, put the plugs back in, wires back on. Started it, it runs like hell. The sticker on the front end says it should be timed to 10 degrees BTDC, so I think that's all we have left to do to get it in order. Just timing it to that 10 BTDC. I must ask, though.
On my '88 C1500, to time it, I had to disconnect a wire at the junction block. People were calling it a "timing bypass." Where might this be on this Blazer?
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SleeperSS
Senior Member
Posts: 1820
Loc: Spanaway, Wa
Reg: 10-17-04
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07-07-12 12:27 PM - Post#2245468
In response to TheBurningRed
For some reason it seems to me it's a tan wire,black stripe on the passenger side up under the dash...might be wrong tho. Check on autozones site.
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TheBurningRed
Forum Newbie
Posts: 45
Loc: Southern California
Reg: 04-28-12
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07-07-12 01:05 PM - Post#2245490
In response to SleeperSS
Consulted a Chilton manual on it, and you're right according to the book. Thanks for the heads up. Appreciate all the help. I'll post back once we get back at it and time it.
Gotta say, though, getting at that bolt to loosen the plate to time it isn't fun. Maybe it's because I've got somewhat big hands.
Oh, also, a mechanic had told us that these 2.8L V6 motors they used for them aren't the most reliable motors out there. Is there truth to this?
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SleeperSS
Senior Member
Posts: 1820
Loc: Spanaway, Wa
Reg: 10-17-04
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07-07-12 02:29 PM - Post#2245502
In response to TheBurningRed
They suck...it's a tie between 2.8 and 4.3.
Dist hold down is a pain. I used a swivel and some tape to make sure it didn't come off.
Edit...need to remember glasses...I thought it said mounts. I had 198K on my 2.8 before it ate a head gasket....my 4.3 just turned 240K...no complaints.
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Keith_Knox
Moderator and "10th Year" Silver Supporting Member
Posts: 2738
Age: 71
Loc: Napa, Ca USA
Reg: 04-02-00
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07-07-12 05:58 PM - Post#2245539
In response to TheBurningRed
I bought a 92 S-10 extended cab new with the 2.8 TBI and 5 speed tranny. At 165,000 the oil filter blew off and ran it out of oil. Put in a Napa long block. Had valve resession and got a valve job done. Sold it to my son. The truck now has 349,000 miles on it when he smogged it a couple of months ago. Still original injectors and starter. Only things replaced were a couple of alt, water pumps and clutches. I think that is pretty good, so I don't have any problems with the 2.8.
1948 Chevy Fleetmaster Coupe Purchased 6/2010.
1996 Chevy Monte Carlo
2002 Dodge Dakota Quad Cab
2013 F150 Crew Cab |
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TheBurningRed
Forum Newbie
Posts: 45
Loc: Southern California
Reg: 04-28-12
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07-07-12 10:38 PM - Post#2245603
In response to Keith_Knox
So it essentially comes down to being a case by case thing. The big reason that had been thrown at us was that they "go through crankshafts quickly." Any way it goes, right now, the bottom line is getting out there tomorrow morning and getting it timed properly so we can see if that's the root of the issue and go from there. Given the sticker under the hood says 10 degrees BTDC, that would explain why it runs like crap at TDC. So we shall see.
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Keith_Knox
Moderator and "10th Year" Silver Supporting Member
Posts: 2738
Age: 71
Loc: Napa, Ca USA
Reg: 04-02-00
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07-08-12 09:26 AM - Post#2245687
In response to TheBurningRed
I heard one time that the TBI's were better than the carburated ones. Have no idea if it is true or not.
1948 Chevy Fleetmaster Coupe Purchased 6/2010.
1996 Chevy Monte Carlo
2002 Dodge Dakota Quad Cab
2013 F150 Crew Cab |
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SleeperSS
Senior Member
Posts: 1820
Loc: Spanaway, Wa
Reg: 10-17-04
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07-08-12 01:03 PM - Post#2245752
In response to Keith_Knox
I'd much rather have a TBI. The carbed models became pretty temperamental.
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