you do need a timing light.
Lets see if its the 95 in your signature unplug the brown wire under your glove box then set base timing with light
If its the 89 pull the black cover off the firewall left of center and the brown wire is there then crank and set base timing
Its not the best pic but i did dig it out of the trash.
Anyways if you look at the gear closey you can see the shiney part of the gear well thats the wear that causes problems in vortecs and is very well possible with any distributor
symptoms still sound normal like on the vortec's. You said it wouldn't do it this morning. I have a 98 blazer in the yard right now same thing the miss would come on go as it pleased and no jump in rpms until it got really bad at the end.
And the clunk your hearing in your drive train could be...
I never had that problem with a tbi truck. But i have worked on plenty with the vortec engine same symptoms and it would always be a wore distributor gear. So you could probably pull your distributor and see if the gear is wore
I'll try to explain but its not one of my strong points. Bend the wires on the connector so its long ways like the column then pull the switch through with the harness then bend the new one same way and feed it back down
350 TBI, ebay headers 2.5" pipe from headers back, flowmaster super 44, and 3" tips 18" long
True Duals no crossovers, no cats
http://www.youtube.com/watch?v=rNARh79IHyM&list=UUspwlghL3rxmazKyTjvXefg&index=3&feature=plcp
Ill get my new truck later
Its worthless. When i had my old 88 and after i did this. I took it down an old back road and got it up to about 40mph and tried to lockup the rears but the front locked up first everytime
I dont believe A/C really makes a difference in these truck and i get around 16-18mpg
But ill find out when it gets cooler and ill drive with the windows down for the first time. LOL