87 R-10 No start issue

backyardgarage · Nov 14, 2018

So this one has me stumped, I have an 87 R-10 with a 350 TBI. I have air, fuel and I have spark, although it's a weak spark. Timing is correct, new coil, module, plugs, wires, cap, rotor and a new battery. I'm assuming the weak spark is the culprit, but I'm not sure why. Now I was told this truck ran before I got, so tomorrow I'm going to do a compression test for my own piece of mind and start chasing voltage. Any one have any ideas what I should be looking for??

Charlie · Nov 14, 2018

backyardgarage · Nov 14, 2018

Thanks!!

4WDKC · Nov 14, 2018

Just because you see it spraying fuel doesnt mean its the right amount, rent a pressure tester from parts store and check it out.

Snoots · Nov 14, 2018

Spark plug gap?

backyardgarage · Nov 15, 2018

checked plug gap this morning @.35....notice the ignition switch is not springing back at the start point, in process of checking that out now.

and the fuel amount, I should get hint it's trying to fire, but I have nothing. And the plugs are still cleanish, not fuel fouled.

Crispy · Nov 15, 2018

I cant be much help with a diagram but check your grounds. I had a truck that had a finicky battery to chassis ground and it would cause a crank and no start condition.

backyardgarage · Nov 15, 2018

Crispy said:
I cant be much help with a diagram but check your grounds. I had a truck that had a finicky battery to chassis ground and it would cause a crank and no start condition.

yes sir, doing that today also.....trying to rule all the stupid crap out first

smoothandlow84 · Nov 15, 2018

Check the ignition switch located on top of the steering column. Old and worn contacts will arc...and also cause a no start issue. Also check that the fuel pump relay is functioning as well.

backyardgarage · Nov 15, 2018

fuel pump is working, I can here the pump when I turn the key on...the ignition switch is what I'm looking into now, when I get back out to it. I'm thinking it has poor contact and not send the full voltage to the ignition....

Jppr26 · Nov 18, 2018

Put a timing light on it, and look for a consistent pattern. I just went through this with my 87 v20. I was getting irregular spark and it was cutting out on acceleration. I replaced the pickup coil in the distributor and that worked for about 3 miles, then it died. Getting no spark, I ended up replacing the whole distributor because the magnets for the pickup coil had craped out, my old distributor would spin freely. The new one I can feel the magnets as they passed by when I turn it.

87 R-10 No start issue

backyardgarage

Member

Charlie

Mopar by Birth. Chevy by Choice.

backyardgarage

Member

4WDKC

Full Access Member

Snoots

Full Access Member

backyardgarage

Member

Crispy

Full Access Member

backyardgarage

Member

smoothandlow84

I'd rather be draggin' frame

backyardgarage

Member

Jppr26

Full Access Member

Similar threads

Latest posts

Forum statistics