Brooksz

Yes I have already checked the the throttle linkage and where it mounts to shaft. Also fuel shut off and cable. Never sure how much boost it makes never had a gauge in the truck. Be great if I can get a fuel pressure gauge that long enough to reach inside the cab 

Update got the new diaphragm in today and turned the bolt on back of pump didn’t change anything still no smoke or any difference in power! Will run a fuel pressure test on Monday. If that checks out any ideas?

Yes I did there over two weeks out right now unfortunately 

I ran a vacuum test on android valve today had it up to 28 psi it was dropping 2 to 3 lbs a minute. Decided to pull apart android valve with four screws. Had a hell of a time with tamper proof screw on back near motor. Got diaphragm out picking up new one in morning and installing tomorrow.Hopefully makes a difference if not I’m going to check fuel pressure unless someone has a better idea on the next step. Thanks hope to get this lazy bulldog moving 

Haha

Yes I am wasn’t sure if others had a Mack mechanic in the area they used for older Mack’s that’s why I posted here as well 

Ok I will do that first and see how it goes thanks.

My truck runs perfect just has no power or smoke very lazy. I’m going to check the diaphragm air line to android valve first. Truck has never been turned up . Would appreciate a video or instructions on how to do this after I resolve the no power issue. It has a mechanical E7 350 8 ll with Bosch pump. Unfortunately I have not had any luck finding a great mechanic in southern nh who is great with these older Mack’s. Thanks 

Does anyone happen to have a video or instruction on how to turn the pump up ? E7 350 1996 mechanical motor

Ok great I was worried when I watched the video and he was using a measuring device to try and get everything back together. Way over my pay grade. Really hope that’s what is wrong and get some power out of this truck.

You have a video of them taking that android valve apart with the four screws. Or is it very easy to unbolt and put new diaphragm in.

Thanks I will get it to my garage this weekend and see how it looks. Appreciate your help 

Has anyone ever worked on android fuel assembly on Bosch fuel pump and changed diaphragm? Cannot find out if it can be replaced while still in truck without removing injection pump.

Has anyone ever changed the android fuel assembly diaphragm? If so is it difficult I cannot find information on it. Can it be done leaving pump in truck.

Ok I will try that today. Is it difficult to change the diaphragm if it is bad?

Would someone please help point me in right direction. My E7 350 mechanical motor is lazy. No power, never smokes . Truck runs great but loaded or towing equipment is a joke. I heard to turn it up but I have heard if android valve diaphragm could be not working. Any help would be great. Thanks Scott Brooks