Blown head gasket/Cracked head/tired of mechanics

[bigfootchiro]

Now the damn security fuel shutoff won’t let it stay running! Gaaaaahd

 

[dubyagee01]

What year?


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[bigfootchiro]

What year?


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1999. I’ve done the reset procedure so many times, and I even replaced the ignition module. Doesn’t do it often, but still does from time to time.

 

[dubyagee01]

My 2000 does it sometimes. I keep a key from another truck that fits but wont turn the lock. I put it in and work it back and forth then start it with the right key. Works every time.


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[bigfootchiro]

My 2000 does it sometimes. I keep a key from another truck that fits but wont turn the lock. I put it in and work it back and forth then start it with the right key. Works every time.


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Interesting! I’ll have to try that next time.

 

[bigfootchiro]

So turns out, valves were still too tight. I can’t believe how tight they were, considering the procedures we followed. Now adjusting them with the valve covers off, and it’s waaaaay easier! Doing passenger side tomorrow. Only problem so far I think is with the distributor. I can’t seem to get it to set down with the metal tab pointing at the 8 mark on the distributor. I’ve got it close, but it’s a hair to the right. I’ve been messing with the oil pump to adjust this, but I’ll move it just a tad, and the tab will move halfway to the flat surface on the housing. At idle, the timing is at -22. Haven’t risen to 1100RPM as the valves are still being adjusted. Hopefully after valves are all adjusted, it will smooth out the idle. Any tips or tricks would be great!

 

[randeez]

I think the slot in the oil pump also lines up with the distributor rotor, with a long flathead point the oil pump at cyl 1 also. note which way the cam gear and distributor gear mesh, when you set the distributor in it should be a few degrees CCW (or whatever is meshes) so when fully meshed and bottomed out it'll be pointed at cyl 1. there shouldnt be any timing advance at idle maybe a degree or two. but if you've got the oil pump and everything lined up you will leave distributor clamp loose and turn the entire distributor while the engine is running to get the timing set

 

[bigfootchiro]

So I can’t seem to get it past -16 to -21 timing. Wtf? Between the last two days I’ve probably spent 3 hours just messing with the distributor

 

[randeez]

http://www.gmtruckcentral.com/articles/distributor.html

anything in there help?

 

[bigfootchiro]

http://www.gmtruckcentral.com/articles/distributor.html

anything in there help?

As far as I can tell, I’ve done all of that. Idk if my hold down plate is off, or if the part that inserts into the oil pump is slightly too large (it is bigger that the old one). Been turn the oil pump gear a hair every time, and can’t get it to sear right, it seems.