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8
No spark issue and needing help!
Good info. Thanks 74. I looked and I will say that the timing chain cover from the original motor has the built in tab and it is in a different location than the older style. This probably explains while I was pretty far off on the tab.- 87R10GMC
- Post #29
- Forum: Tech Discussion
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8
No spark issue and needing help!
Balancer looks good. This motor is a little older than the truck. I had no idea there were multiple locations for the tab. I think you're correct on it being the wrong one. The truck is an 87. From my research the timing tab should be more towards the top which is where it's at with my timing...- 87R10GMC
- Post #27
- Forum: Tech Discussion
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8
No spark issue and needing help!
Alright guys. I've got it running pretty good. It idles good and is responsive. I ended up setting the distributor by feel and sound. The timing mark on the harmonic balancer is almost at 1 o'clock and pretty far from the timing tab. Im assuming somethimg is wrong with the tab location as I was...- 87R10GMC
- Post #24
- Forum: Tech Discussion
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8
No spark issue and needing help!
Well the truck was running rough when I first found the wiring issue and got it running. Now that I've adjusted timing to 0 with the timing wire unplugged (and plugged back in) it doesn't seem to want to run at all. I found TDC compression stroke and verified the rotor was pointing at number 1...- 87R10GMC
- Post #23
- Forum: Tech Discussion
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8
No spark issue and needing help!
I've got it all back together and am about to set the timing. It is running a little rough which I expected with pulling the distributor multiples times and the swap in general. I believe I need to set it at 0 degrees and the ECM takes over from there? I'm not home currently and was wondering...- 87R10GMC
- Post #18
- Forum: Tech Discussion
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8
No spark issue and needing help!
It's running! I feel like a moron. The issue the 2 wire plug from the coil to the module. 1 of the pins was pushed back just enough that it wouldn't connect. Thanks for all the help. I may not be out of the woods yet with this truck but now I can at least push forward. Thanks again- 87R10GMC
- Post #16
- Forum: Tech Discussion
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8
No spark issue and needing help!
I finally got a chance to check things out. I have 8 plus volts on b+ while cranking. 12 in run position. This wire is the pink one feeding the external coil I do believe. I started going through the flow chart and am currently on step 5. How do I check for continuity on wires? Any more i put...- 87R10GMC
- Post #15
- Forum: Tech Discussion
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8
No spark issue and needing help!
I sure will. I haven't had time the past couple days. Hoping tomorrow or the weekend at the latest I will have an update.- 87R10GMC
- Post #14
- Forum: Tech Discussion
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8
No spark issue and needing help!
I have a volt meter. How do I check from the distributor to the ecm for continuity? This is just to make sure a wire isn't broken correct? I am going to follow the info on the flow chart and the other things you mentioned and I will post back with my findings- 87R10GMC
- Post #12
- Forum: Tech Discussion
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8
No spark issue and needing help!
Where exactly is the B+ terminal at? Is that the pink wire feeding the coil? That last fuse was good and I'm not getting any codes. Only the flash of 12. What am I looking at on the wiring from distributor to the ecm? I know there is a 4 prong terminal on back of the distributor. Should i have...- 87R10GMC
- Post #10
- Forum: Tech Discussion
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8
No spark issue and needing help!
Yea the check engine light comes on blinks once then stays on in run position. I checked the 2 ecm fuses and the crank fuse. I missed the gauge/idle one. I will check on that asap.- 87R10GMC
- Post #8
- Forum: Tech Discussion
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8
No spark issue and needing help!
I have 12 volts to the pink wire in the run position. I haven't checked while cranking. I assume check the pink wire going to the coil for 12 volts while cranking? I will do that today once I get some help. I put an inline spark tester on the coil and into the coil wire and cranked and it didnt...- 87R10GMC
- Post #7
- Forum: Tech Discussion
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8
No spark issue and needing help!
Master Pro coil and Duralast ICM. I will try and exchange it tomorrow. I believe I will have to order the ac delco. I was thinking between the new distributor I installed and returned and this other ICM that is in it now that I would have fixed it. Thanks for the input- 87R10GMC
- Post #3
- Forum: Tech Discussion
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8
No spark issue and needing help!
Hey everyone. I bought an 87 r10 half ton 2wd awhile back and drove it home with a rod knocking. Now let's jump ahead a few months. I put the tbi unit on top of an older style block and dropped it in and days later I've yet to get it fired up. I have no spark and no injector spray. I suspected...- 87R10GMC
- Thread
- Replies: 32
- Forum: Tech Discussion
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8
Hoosier Square Fan
Hello everybody. I'm from southern Indiana and just joined the forum. I look forward to helping out when and where I can. I'm headed over to the the tech board in hopes of getting help with a no spark/no fuel problem that has put me through the ringer.- 87R10GMC
- Thread
- Replies: 9
- Forum: Introduction
