new engine problems

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Lindsay36551
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Re: new engine problems

Post by Lindsay36551 » December 14th, 2019, 5:12 pm

Ok got some sleep , worked on it till 1,30 am.
I got the carb straightened out. Checked valves again ,hot and running 015. spot on.
Here's what I found today . When I set the timing with a light it is spot on, but runs like crap, if I set timing for smoothest sounding idle I'm off 30-40 degrees before tdc.
enough for today ,Gotta go flip some ribs!!
1967 M-35-a2-D SOLD
1973 M151A2
M151 A1-SOLD
196? franken MUTT
M1oo trailer-sold
1963 M151-sold
1968 M416 trailer
1988 998 Humvee-4 man
1994 998 Humvee-up armored

Mark
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Re: new engine problems

Post by Mark » December 14th, 2019, 5:34 pm

I'd say the timing chain marks aren't lined up??
mark


1968 m274A5
1960 m151
1981 m151A2
1964 m416
1971 m416

rickf
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Re: new engine problems

Post by rickf » December 14th, 2019, 5:43 pm

No chain but the gears are marked, are you sure you got the marks lined up? The best idle will always be advanced on the timing but not that far.
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone

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m3a1
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Re: new engine problems

Post by m3a1 » December 14th, 2019, 8:42 pm

See? Help is already on the way. Well done, men!

If those marks are lined up I'm betting those gears don't belong in this engine.

Lindsay36551
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Re: new engine problems

Post by Lindsay36551 » December 14th, 2019, 10:32 pm

How hard is it to check this?
I assume I will have to remove the front of the engine. do I need to dismantle any of the work I have already?
also what manual would cover this my one here does not go that deep into the engine.
we are getting there! just wanted to thank everyone for there help!!!
1967 M-35-a2-D SOLD
1973 M151A2
M151 A1-SOLD
196? franken MUTT
M1oo trailer-sold
1963 M151-sold
1968 M416 trailer
1988 998 Humvee-4 man
1994 998 Humvee-up armored

rickf
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Re: new engine problems

Post by rickf » December 14th, 2019, 10:40 pm

You will need to take off the crankshaft pulley, water pump and timing cover. If you used the Permatex #3 that I always recommend on the timing cover gasket then it should come off and be able to be reused. Same with the water pump gaskets. All in all it is not a lot of work. The manual would be the -34 I believe.
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone

Lindsay36551
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Re: new engine problems

Post by Lindsay36551 » December 14th, 2019, 10:56 pm

Thanks Rick, I found It!
1967 M-35-a2-D SOLD
1973 M151A2
M151 A1-SOLD
196? franken MUTT
M1oo trailer-sold
1963 M151-sold
1968 M416 trailer
1988 998 Humvee-4 man
1994 998 Humvee-up armored

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Re: new engine problems

Post by Surveyor » December 14th, 2019, 11:02 pm

Silly question and something I forgot to check when I did it the first time I tried... was the timing light adjustment set to zero before you started?

If you take the timing cover off here is an image from Mr. Recovery's rebuild thread. Notice the two holes aligned together on face of gears.

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1960 M151 Run #1 (working on it) 60 in 2020!
"There is one nut on a M151 that is very difficult to remove....." - K8icu
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Lindsay36551
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Re: new engine problems

Post by Lindsay36551 » December 20th, 2019, 11:16 pm

Ill be honest with you all, I need to push her back into storage for a bit.
I have 2 Humvees coming in, besides MUTT HUNTERS 151 in the shop ! for body work and final paint! and the FEB show , I'm booked solid till it gets cool again up north!
Oh yea and a tv show to shoot starting in MARCH.
WE are busy!!!! :D :D :D :D
1967 M-35-a2-D SOLD
1973 M151A2
M151 A1-SOLD
196? franken MUTT
M1oo trailer-sold
1963 M151-sold
1968 M416 trailer
1988 998 Humvee-4 man
1994 998 Humvee-up armored

svramselaar
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Re: new engine problems

Post by svramselaar » December 26th, 2019, 6:22 am

hi

you can check the timing
take the valve cover off
take the sparkplugs out
turn the engine at top dead center ( a bit further as the timing mark )
now piston 1 and 4 are fully up
if you now turn the engine a bit forwards and backwards
at cyl 1 or 4 the valves must tumble i think a 1/4 inch past the timing mark (tdc)
if not the timing is not correct

Rickf let me know if you think the same

george

Lindsay36551
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Re: new engine problems

Post by Lindsay36551 » January 9th, 2020, 5:43 pm

Ok after a 10 day break,
I double checked every thing that we have done.
I installed 4 brand new plugs, reset timing and now everything seems to be working fine!
Now we bring her back to stone cold stock , body and paint wise! :D :D :D :D :D
1967 M-35-a2-D SOLD
1973 M151A2
M151 A1-SOLD
196? franken MUTT
M1oo trailer-sold
1963 M151-sold
1968 M416 trailer
1988 998 Humvee-4 man
1994 998 Humvee-up armored

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