Ethanol Gas cause issues?

[Katrina/10]

That should be the right one. But replacing it will not fix the problems you have mentioned.

[SCHRUMGMC]

Then what will??? assuming a Carb rebuild right? but the Vacuum advance looks like it hasn't been replaced at all? also found out the exhaust manifold was cracked when they first saw the truck sitting at the car place.....but its been filled up and looks good next time it is running i'll see about putting my hand over it and see if the exhaust manifold is leaking

[SCHRUMGMC]

I am guessing to go to Carquest and get a new Rochester 1 bbl Carb rebuild kit ? How much does a rebuild typically cost

Lean mixture signs are:

Backfires as the throttle is closed (primarily during coast-downs)

Lurching acceleration

White or light grey spark plugs

Requires excessive amounts of choke to run/start

White or light grey muffler end pipes

Bluing (on chrome systems) of the exhaust header down-pipes

I am starting to think its that up there ^^^ because the truck requires excessive Choke for it to run

[Katrina/10]

I think you're on the right track now.

[SCHRUMGMC]

How much does a rebuild typically cost?

[OrrieG]

My take on the situation:

Originally Posted by SCHRUMGMC

I am guessing to go to Carquest and get a new Rochester 1 bbl Carb rebuild kit ? How much does a rebuild typically cost

Lean mixture signs are:

Backfires as the throttle is closed (primarily during coast-downs)<<TIMING

Lurching acceleration<<BAD ACCEL PUMP, TIMING

White or light grey spark plugs<<NOT BAD MEANS GOOD COMBUSTION WITH NO OIL FOWLING.

Requires excessive amounts of choke to run/start<<BAD ACCEL PUM

White or light grey muffler end pipes<<NOT BAD MEANS WHAT EVER GAS YOU ARE GETTING IS BEING BURNED, NOT OVER JETTED.

Bluing (on chrome systems) of the exhaust header down-pipes<<YOU HAVE CHROME HEADERS???

I am starting to think its that up there ^^^ because the truck requires excessive Choke for it to run

[SCHRUMGMC]

Thanks Orrie.I believe the Accelerator pump is just bad

[SCHRUMGMC]

Dadgum it is $120 just to rebuild my Carb

[OrrieG]

Classic has the kit on sale less than $30
http://www.classicpartsusa.com/produ...rburetor_Items

[SCHRUMGMC]

I can get a kit for 32.99 and a rebuild for $50

[SCHRUMGMC]

Just got a really good deal, if I can buy the Rebuild kit he will rebuild it for Free.


My temp gauge isn't working like it should, the Oil gauge works but I've noticed the Temp gauge doesn't move at at all..Could it be that the Thermostat is broken and old(Very likely) or is the Temp sending unit broke?(doubt it)

[imjeff]

To dispel a few ethanol myths...most premium has ethanol in it. If it doesn't, they will advertise it. Ethanol is a solvent so it will clean your tank of 40 years of varnish and gunk clogging your fuel filters. Ethanol absorbs water and phases out (separates from the gas) resulting in a leftover low octane gasoline. No additive will prevent phase out. Save your money on the additives. If you don't drive your truck enough to prevent phase out, find a source for clear gas. It's worth the extra money and yields you better mileage as a side benefit. I run E10 in my DD K20 and clear in my Chevelles and Harley (it's 40 years old, too).

[SCHRUMGMC]

Great to know !! Thanks bud

[SCHRUMGMC]

Just got a really good deal, if I can buy the Rebuild kit he will rebuild it for Free.


My temp gauge isn't working like it should, the Oil gauge works but I've noticed the Temp gauge doesn't move at at all..Could it be that the Thermostat is broken and old(Very likely) or is the Temp sending unit broke?(doubt it)

[OrrieG]

to test the sender and gauge
http://www.americanautowire.com/view...oubleshooting/

to test the tstat, put it in a pan of water, borrow your mom's candy thermometer, when it hits the listed temp it should open. If not, its bad.

[SCHRUMGMC]

Coming to think of it, it could be a fuse...Orrie is there a Fuse diagram?

My truck has a small little fuse holder under the Dash

[Old Truck Man]

The worst thing about ethanol and all the new gas is its unleaded. On older engines the lead is the lubricant needed for the valve seats. Keep running unleaded in a older engine and the valve seats get pounded out and the valves sink. You need hard valves or hard seats to prevent valve erosion. I add a quart of diesel fuel to every tank full of gas.

[Katrina/10]

Originally Posted by Old Truck Man

The worst thing about ethanol and all the new gas is its unleaded. On older engines the lead is the lubricant needed for the valve seats. Keep running unleaded in a older engine and the valve seats get pounded out and the valves sink. You need hard valves or hard seats to prevent valve erosion. I add a quart of diesel fuel to every tank full of gas.

Glad this is on topic.

[SCHRUMGMC]

Well Katrina, I didn't want to keep making threads


You added that to a Non-Diesel engine??? Sounds like it'd blow the motor

[Katrina/10]

Originally Posted by SCHRUMGMC

Well Katrina, I didn't want to keep making threads


You added that to a Non-Diesel engine??? Sounds like it'd blow the motor

More people will be able to help you if the title reflects the discussion.

I hope you can get your carb fixed.

[SCHRUMGMC]

True..
Getting it rebuilt here soon for FREE
Trying to re-connect the Vacuum advance line but it won't screw in the right way

[Katrina/10]

You may have to twist the line a bit to get the nut to thread back in.

[SCHRUMGMC]

Thanks, on my way out the Door now..Pulled the truck down here and it was popping and carrying on driving me insane...Hopefully this rebuild will fix all of the issues

[OrrieG]

Use and save the link in my signature. Scroll down to the year index and change to your year. It manual has a wiring diagram.

[SCHRUMGMC]

How was the Brake lights originally grounded and where was it located ?

I'm thinking on going with a ground strap