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I bought the new batteries for the Maliblue and my truck from the chevy dealer. I have heard enough stories about them off brands of batteries that, yup, you know it, cry once buy once.

Whats the boost pressure running at ? ? ? ? Vacuum pump, if so equipped, check the vacuum on the suction side of the pump. IDR how many inches of vacuum that the pump should be drawing, depending on altitude but I’m guessing at least 22 to 25 inches of vacuum. Black smoke from my truck was due...

Give the fuel pressure regulator adjustment screw about 1/4 of a turn. Took the FP at the IP from about eleven or twelve to just under 15 PSI. Now hope it dont go over 15 once on the road.

Looks pretty old. Okay, I couldnt resist, just had to throw that out there. I wouldnt know the difference between the two styles unless they was laid out side by side.

Thank You gentlemen for Your service to this great nation. And to any others of the forum not mentioned.

Notice I used the word professional. I one time used the term expert and the person I said that to explained that an ex is something of the past and spurt is a leak under pressure. 😹😹😹😹 I have not used that term again since that moment. 🤷

I will never again install a new set of injectors unless I send them to @Rockabillyrat and have them checked and adjusted to within as close a tolerance as He can get them. I believe He is our resident professional on such as the injectors and manual injection pumps. I hope someday He sets up to...

Welcome to the forum Warrior. Listen to what @Will L. Is saying. I edit my post to add that statement. I run a 1993 K1500 for quite a few years. Pulled a tandem axle heavy duty trailer with it. IIRC it was a 7,000 pound trailer, bumper pull unit. For pulling 5,000 pounds the 1500 series should...

Leroy is good and stands behind everything He sells. But, regardless of who anyone gets injectors from, take them to a reliable source and get them tested and adjusted so they all meet the proper specs.

YUPPERS

Lets take that to Leroy Diesel. He is a sponsor of this site and pays to help keep this forum online. Here is a complete listing of what He carries for system cooling. https://leroydiesel.com/product-category/cooling/

@Will L. led me to a test. It destroys Your fan clutch but is a sure fired way of testing to see if the fan clutch has failed. He advised me to drill a hole a little smaller than a sheet metal screw through the fan clutch, then install that sheet metal screw through the fan clutch, locking it...

Could also be the fan clutch not locking in like it did before so many miles. You can do a test on Your old stats by hanging them on a string in a pot of water. Heat the water and when the a stat falls from the string read a thermometer thats also hanging in the water.

Here, get these. https://kennedydiesel.com/product/genuine-gm-thermostat-set-for-6-5-with-dual-stats-190f/

1990 most likely an electronical speedometer. Check that the electro/magnetical pickup thingabob at the tail shaft is producing voltage that allows the speedo to function. Check for broke wires along the way between that thingy and the firewall.

I built my garage with 10 foot ceiling. I Was not going to install windows. Figure when I walk in the lights have to be turned on anyway. My son talked me into installing windows. After living with windows in the garage, if ever I was going to do it again. I would not install windows. Makes no...

Not an external leak, an into the cylinders leak. Seems the injectors are having a runaway.

Your definitely dumping a lot of fuel unnecessarily.

I learned about them cold symptoms. I keep a huge jar of them chewable vitamin Cs in the cupboard. One sneeze, one cough, one feel of a scratchy throat and its to that jug of Cs. Three minimum, chew them down, several hours later, at least three more, do that three or four times and them cold...

That’ll teach people to camp down wind from a detroit diesel. 😹😹😹