mrgumby

I have an 05 CH. if you pull the front cover off in the cab where the cup holder is there is a filter in font of the evap and heater core if 99 is the same 

Or the bigger injectors are over fueling at idle might need an ecm reprogrammed or a new trim file for them don’t know if Mack has trim files like the Cummins have    I hear ya on the eup lines reconditioning I’ve only reused them in an emergency but replaced them soon after

Did you try adj the valves and check the camshaft. Seen quite a few of these eat cams. Just a thought 

Does your fan look like the one in the picture I’m pretty sure it does  you can not stop that fan from spinning it works on a temp sensitive clutch it just spins at different speeds as it warms up and cools down 

https://dieselpro.com/.       https://www.powerlinecomponents.com/catalog/detroit-diesel-71/55/variable-speed-governor

Pull the top of the govener box and check the govener spring and linkage for binding 

 Been watching this guy with his old cab over. I like it pretty good guy trying to make living with that old pete

Cassidy and lee the case dealer you speak of ?

How many hours on it. I had one once with about 20 thousand hours had a couple worn exhaust guides had blow by under load  something else to check

Don’t know have you looked in your manual

Is it kind of a rattling vibration sound when the transmission is not under load when your just at the right rpm with your speed 

Wishing everyone a merry Christmas  or what ever holiday you celebrate  stay safe stay sober and enjoy. 

Yes it’s true did that to one I used to drive 

Sounds like injector cups

Damn gps 

Should check egr cooler also

Did you just replace the inside drive cable or both the drive cable and the housing for the cable   I always put a little oil or light grease in the cable housing

4:17 will give you more highway speed  no matter what size tire you put on the 24.5 will give you the most high way speed 

Wow you need to poke a hole in that Thing  you got a nice goiter there

Wow Chevy cab over can’t be many of those left on the planet 

I could never understand why they drive with their leg like that         Anybody ??

1 check tank for  crap.                     2 check fuel lines.    3 check lift pump     4ckeck filter housing for crack  5 check fuel tank or fuel cap for ventilation      6 if it has a fuel tank shut off valve check that also I’ve seen some with  rubber in them fall apart and cause a problem but that was usually on old ones that people changed  

They are good and heavy  but when you have guys that can’t keep their foot off the floor and eat up clutch brakes    the newer ones that just have a pop in pin are easier to do