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Have a M-11 that loses prime and stalls after starting
have a M-11 that loses prime and stalls after starting (after manual prime), sometimes does not even start … read more
Steven
Steven
Triage Tech/Shop Foreman
Associates
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I have a PX-8 badged cummins ESN-73039806. I am looking for
I have a PX-8 badged cummins ESN-73039806. I am looking for the return rate of the HPCR pump and the lift pump pressure spec … read more
Steven
Steven
Triage Tech/Shop Foreman
Associates
11 satisfied customers
I just bought am 08 Mack with the MP7 engine this past
Hello, I just bought am 08 Mack with the MP7 engine this past Saturday. Drove it for about two hours and noticed that it started losing power and acted like it was starved for fuel. Put more fuel in i… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,803 satisfied customers
Wayne working on this 1978 Mack R686. The parking air brake
Wayne working on this 1978 Mack R686. The parking air brake valve was leaking. And the low pressure and accelerybrake lighht was out. I changed the bulbs as well. What I noticed on this truck is that … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
11,570 satisfied customers
We have a cummins ISX that is having a hard time starting.
we have a cummins ISX that is having a hard time starting. it will run fine if we give it a shot or ether, but will not start without it. we heard that either the lift pump or the gear pump is bad. we… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
11,570 satisfied customers
Hard start after overnite is there a check valve in return
hard start after overnite is there a check valve in return lines to tank Replaced check valve on seperator nand on front of head … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
11,570 satisfied customers
Got a 2009 mack gu713 when it gets hot and you shut it off
got a 2009 mack gu713 when it gets hot and you shut it off will crack for every and not start again only when hot not building fuel pressure let sit for awhile and cool off starts right back up … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
11,570 satisfied customers
I have a 2003 24 valve dodge cummins. runs great. one
I have a 2003 24 valve dodge cummins. runs great. one problem is starting cold if not plugged in, even if its, lets say 50 degrees out. it will crank fine (new batteries) but not start. if I plug it i… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
11,570 satisfied customers
I have a 1996 semi electronic Mack Truck. One of the heads
I have a 1996 semi electronic Mack Truck. One of the heads cracked. I replaced the head. It had an excessive amount of black smoke when you were pulling. I found a clamp loose on the air intake and ti… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
11,570 satisfied customers
I have a 03 Mack E7 427 engine it runs hot with thermostats
I have a 03 Mack E7 427 engine it runs hot with thermostats in you can take them out and it does not get above 160 degrees empty soon as you put thermostats back in it starts running hot what could be… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
11,570 satisfied customers
I am working on a 98 m11. It has no active codes but it
I am working on a 98 m11. It has no active codes but it acting like it is starving for fuel while sitting still at wot and even worse driving down road. I have changed filters w/center o-ring,fuel sol… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
696 satisfied customers
Working on a mack (mtg date 02/1999). engine is an e7 427.
working on a mack (mtg date 02/1999). engine is an e7 427. had a miss on #1 and #3 cylinder. Confirmed this by loosening the injector lines at the electric solenoids. I installed 2 reman injectors. #1… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
11,570 satisfied customers
I am working on a mack ch613, it has an E7 engine. engine
I am working on a mack ch613, it has an E7 engine. engine has a miss. I cracked the injector lines at the electric solenoids and #1 and #3 make no difference. I was thinking of swapping two of the sol… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
11,570 satisfied customers
Hello, I have been reading your answers, and I am happy with
Hello, I have been reading your answers, and I am happy with your correspondence with customers. I have a 93 Mack E7 Mechanical engine that developed low oil pressure shortly after replacing a cylinde… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
11,570 satisfied customers
Ok I had a problem with dd15 that its fuel pressure doesn't
Ok I had a problem with dd15 that its fuel pressure doesn't stays. It's hard to start it after 3 hrs and I connect external fuel gauge to in line the pressure fluctuate at the range of 20 psi means it… read more
Clayton
Clayton
Technician
Vocational, Technical or Trade Scho
625 satisfied customers
I am having a starting problem with my 60 series it has 250
I am having a starting problem with my 60 series it has 250 thousand km on 2007 fld sd . Only in the morning it take about 10 minutes long crank then it's start after first hard start in the morning i… read more
Clayton
Clayton
Technician
Vocational, Technical or Trade Scho
625 satisfied customers
Our Mack 350 4 valve 1989 model. Air compressor keeps pumping
Our Mack 350 4 valve 1989 model. Air compressor keeps pumping air we have replaced regulator , no change so quess it in release valves in head , which part do you take off to repair… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
11,570 satisfied customers
Problems with air in radiator on Mack ch613. Have replaced
Problems with air in radiator on Mack ch613. Have replaced air compressor 3 times. Still getting air. If we bypass the compressor we don't get any air bubbles.… read more
Jim
Jim
Diesel tech.
212 satisfied customers
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