87R10GMC
Junior Member
- Joined
- Jun 20, 2017
- Posts
- 16
- Reaction score
- 2
- Location
- Indiana
- First Name
- Cody
- Truck Year
- 1987
- Truck Model
- R10
- Engine Size
- 305
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 the ICM and it did test bad. I bought a new one and ran it through the test 8 times and it seemed to be a good one. After installation there was no change. I have 12 volts to the external coil. The pickup coil has 800 ohms. I have multiple grounds and they are clean and secure. Any idea on what I'm missing here? I used an online spark tester and NO fire out of the coil. I also put a new coil on it. I also put a new distributor in and ended up taking it back as there was no change. I really need to get this truck on the road soon.Thanks in advance for any and all help.