GEWICHT: 55 kg
Intime Dienste: Bandage, Rape, Anilingus (passiv), Sperma in den Mund, Spanking
By mimscorp , September 9, in Engine and Transmission. Hi, I have a Mack R Tractor. I was recently cited for making excess smoke. The inspector had me hold the accelerator to the floor for several seconds repeatedly. The truck did appear to make undue black smoke. The man told me that it was probably the puff limiter. Looking the truck over I see that there is 3 lines on what I think is the puff limiter control valve.
In testing them I find that one is energized with air upon releasing the brakes. The next line going down to the injector pump doesn't change upon starting truck, pressing the accelerator quick, letting off, or any other time. The third line looks to be going down to the transmission and simply hooked up to the intake along with the puff valve. My question is, when does the valve do what? I can only assume that when stepping on the accelerator I'm supposed to get air to the pump?
Also can anyone tell me what the intake pressure should be on this truck. Thank you much Bill I'm attaching pics of the engine and of the valve itself. The puff limiter basically stops the rack in the pump from opening up fully until the engine can handle the fuel.
The valve in the pic is as you suspected the control valve operated by vacuum. You should have air to the limiter valve which is on the front of the fuel pump at idle with the maxi brakes off.
This stops the rack fully opening untill the revs are up enough to take the fuel. My guess is the control valve is gummed up if you don't get air out of the port going to the pump. Black smoke is unburnt fuel and too much can wash the oil off the bore and lead to cylinder wear. Start over and make some changes here. The air come to the trans and has a valve on it that lets no air thru to the reversing relay when in lower gear.