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Nater1977

OK, engine brake has drastically improved. So now what’s Happening Once it gets past 220° and you hit 30 psi it will Fall off like it’s one cylinder anything less than 220. It feels ok. I do have a 215 thermostat in it. The engine reached 235 today. (These are oil temps ) It was 90° out and I was pulling 80,000 up some pretty long Hills It’ll come down about two 220 when the fan comes on. Maybe I have a bad injector causing this issue. I’ll rerun the test again once I have a moment to see if any that are failing again. And once I’m able to hook up to the truck, I will send out the ECU mapping. I was also thinking. Is it possible it could be timing causing this? Because the engine does have that helicopter/freight train noise the TSP does not pertain to this truck with the fuel pump gear, but if the timing is out, I could possibly get that noise I would think from the injector pump And maybe causing this brake issue?

Also, when I was Running the engine brake I would notice once the engine brake was falling off. It would never come back unless I restarted the engine brake meaning hit the fuel pedal or clutch pedal and I will come back on and be strong again. And like I said before, it only feels like half of the engine brake is working when this happens like you’re in setting one