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Get your batteries load tested. They should be 800 Cold Cranking Amps each. If below that. Replace. Next is all the connections of the 24 volt path from the batteries to the starter motor. Undo, clean, sand, tighten after inspection. Then you have your starter motor itself. If everything else...

Tire size. 9.00 means 9 inch tread width and 100% side wall ratio. So, the side wall is also 9inches. 9 + 9 for each sidewall plus the 20 inch rim means 38 inch tall tire. 11.00 x 20 should be 42 inches. 2600 rpm with 9.00 tires should have you indicating 56 mph. What are you indicating at...

I enjoy all the above sounds as well. I kind of also like the air control valve popping a release of air about 15 minutes after shut down. I hear “aren’t we going to play anymore today” when it does that.

A volt meter is much better than a magnet for voltage diagnostics. I suggest you read the electrical troubleshooting guide in the -20 manual. Then follow the steps exactly.

I was writing about the air compressor.

Maybe bad ignition switch or a switch that needs to be adjusted.

Pull the caps for the unloader valves off. The springs are probably broken. Mine were. I found some springs at a hardware store of about the same size and wire diameter. Been working great ever since.

Reach up behind the gauges and feel your way to where the cable meets the speedometer. You can look first, but your left hand will go by feel only. You will be able to feel the release to pop it off. Once off, you can pull the cable below the dash and work standing up.

If the gauge moves with fuel then it is about as good as the stock system ever was. 3/4 tank indicated should be considered no more than 1/2 tank of actual fuel left. 1/4 tank indicated means you will be walking soon. It will still run at E. Probably. But not on slopes or inclines and not...

The gear in the 1122 picture is the one he was talking about.

Second the ORD dominance of the Square body. I don't think your rear tires will have any issue fitting. The fronts will for sure. I have 35's (315/75r17) tires on H2 wheels under my Cowdog Suburban. I had to use an ORD 1 inch add a leaf plus trim the front and rear of the wheel openings in...

If just the square drive slot of the yellow gear is bad. Putting aluminum foil around the square end of the speedometer cable will work. However, you probably have a very high drag cable housing and more than likely a hard to turn speedometer. Pulling the cable out the speedometer end of the...

Do you have a good bit of lift and or fender trimming planned?

Is your pink wire plugged in? I know it is obvious, but I have swapped injectors and had instant starts afterwards. Start over at the basics. Bleed the filter, bleed the lines at the injectors and don’t kill your starter turning it over.

The shortest path in theory is the best for the turbo. However, we are talking about a low revving engine in a 6000 pound truck. Sports car throttle response will never be achieved. Ground clearance really isn’t an issue above the axle and between the spring hangers. Between the engine and...

Welcome to the fun. An actual location in your profile will help people near you know they are close to you. If the truck ran 2 years ago. Chances are it will fire right up like it was run yesterday if you have two good batteries. Two load tested to be at least 800 CCA batteries each. Not just...

I’m leaning towards head gasket like in that thread. No blue smoke though. Just black.

Life got in the way again after the post above. One of the inside rear tires leaked, I let the truck sit and by the time I got the tire good. The brakes were low on fluid. So, the truck didn’t get driven on the road. Just around my property pulling trees and being a mobile scaffolding for tree...

The -20 manual tells you exactly how to do it and shows the parts. The -34p manual is a better detail exploded view of all the pieces.

You need the tailgate down to do it. Open the window enough to lower the tailgate. Undo the 4 bolts that hold the glass to the arms of the regulator. Pull the glass all the way out or up enough with support to get to the fasteners holding the regulator on. Remove the regulator. Then the handle...