Just bought my deuce, first had a ticking noise, now its knocking

[oreo9688]

Just drove my new duce home and on the drive after a while I can here a faint ticking, I'm hoping it's not the engine but it sounds like lite knocking when costing or letting off the gas at higher speeds, basically just wondering if there is anything else that can sound like this thanks

 

[swiss]

You are going to have a million issues to troubleshoot, research, and then fix. These are not new cars

First thing is you have to become familar with the vehicle so you know what is normal and what is not.

I would recommend first checking all fluids, grease everything and perform all maintenance. You have started on a long an lifetime journey. Get ready and dont panic.

 

[Barrman]

They make a lot of noises that take a while to get used to what is normal and what isn’t. Are you wearing hearing protection? That is a must and also makes things sound totally different.

Do you have good oil pressure?

Look at your hood hinges at idle. They tend to get loose and bounce like crazy. Then running down the highway they look still and sometimes will start popping around at a specific to your truck speed.

Air compressor belt is something else that will sound like knocking if it is loose at certain rpms with the compressor pumping. Other times when the compressor isn’t pumping but still turning there will be no noise at all.

Try and wiggle your fan front to back. If you get movement, then the water pump could be knocking around on you.

What about your rear axle dog bones? I had one break on my Gasser M35 one night. Knocking, thumping and just chaos I couldn’t figure out until a car got behind me and I saw smoke in the mirror.

I just tried writing some of the things I have experienced.

 

[oreo9688]

They make a lot of noises that take a while to get used to what is normal and what isn’t. Are you wearing hearing protection? That is a must and also makes things sound totally different.

Do you have good oil pressure?

Look at your hood hinges at idle. They tend to get loose and bounce like crazy. Then running down the highway they look still and sometimes will start popping around at a specific to your truck speed.

Air compressor belt is something else that will sound like knocking if it is loose at certain rpms with the compressor pumping. Other times when the compressor isn’t pumping but still turning there will be no noise at all.

Try and wiggle your fan front to back. If you get movement, then the water pump could be knocking around on you.

What about your rear axle dog bones? I had one break on my Gasser M35 one night. Knocking, thumping and just chaos I couldn’t figure out until a car got behi

Thanks for the info,I did check dog bones before I left they seemed alright also the sound is definitely coming from the engine compartment and is in frequency with the rpm, I also tightened the belt before we set out but I will definitely re check that and the hinges,oil level and pressure was good so I'm hopeful that's at least a sign that it's not what I thought it was, definitely have a bit of work to do and learn.

 

[oreo9688]

You are going to have a million issues to troubleshoot, research, and then fix. These are not new cars

First thing is you have to become familar with the vehicle so you know what is normal and what is not.

I would recommend first checking all fluids, grease everything and perform all maintenance. You have started on a long an lifetime journey. Get ready and dont panic.

Thanks for the advice,I definitely have quite the learning curve ahead,I have a buddy who's a diesel mechanic that's going to be in town I'm going to wait to see what his take is on it before I do something major,fr now just fix things.

 

[G744]

Valve tappets can make a ticking sound in step with RPMs.

A bit loose valve is loads better than one too tight.

It is a full afternoon job to set them, but good training and worth it.

 

[biscuitwhistler37]

I haven't seen the exhaust manifold listed here yet, that'll definitely make a tick in step with the rpms if it's leaking.

 

[glcaines]

Just drove my new duce home and on the drive after a while I can here a faint ticking, I'm hoping it's not the engine but it sounds like lite knocking when costing or letting off the gas at higher speeds, basically just wondering if there is anything else that can sound like this thanks

Are you sure the ticking sound is from the engine and not from the transmission? Do you hear the ticking while the engine is running, but the truck is stopped? I recovered an M35A2 from Fort Indiantown Gap, PA to North Georgia, years ago. The whole way home I heard a distinct ticking while in 5th gear, especially when letting off the accelerator or going downhill at high speed. After arriving home and only a short while later, my transmission disintegrated while driving. The transmission was full of scrap metal. A takeout transmission from Tony Wright was required. No more ticking. These trucks make a lot of strange noises. It will take time to know what is normal and what is not.

 

[oreo9688]

Valve tappets can make a ticking sound in step with RPMs.

A bit loose valve is loads better than one too tight.

It is a full afternoon job to set them, but good training and worth it.

Thanks for the tip,I was looking in to it more today definitely a sound from the engine around cylinder 4 and at higher rpm cylinder one, I'm going to have a buddy who worked on Diesels a lot more then I have take a listen and see what he thinks,I hope your right and it's not something worse

 

[oreo9688]

I just picked up a truck with the multi fuel engine a little over a week ago and started hearing some ticking on the way back, wasn't that bad chocked it up to it being an old truck.well i was driving down the road the other day and my oil pressure just started to sink and then it started knocking and sounds like a freight train,it only seems to do this after it gets good and hot but it's definitely a problem, anyone with a similar experience?

 

[cattlerepairman]

Knocking is never good, especially when the oil pressure drops with it.

If you just picked up the truck, you likely planned on servicing it anyway. How do you feel about dropping the oil pan and checking main and rod bearings? Chances are, you find one or more worn. You can put new ones in from below....
A set of main and connecting rod bearings will set you back around $200.

Also, update the connecting rod bolts while you are in it! The old style (hex) has a habit of leaving its post when not supposed to.
Here is one source for the 12-point bolts you want: https://www.farmlandtractor.com/i-157326-r401091706-white-oliver-connecting-rod-bolt.html?brand:6
Another: https://www.jensales.com/products/e...ard-waukesha-zetor-rod-bolt-hercules-478.html


This could be a cheap fix as opposed to engine removal and rebuild (don't get me wrong, it's fun, but it is also a rabbit hole. Ask me how I know).

You can always do a compression or leak down test to see whether the engine would benefit from new rings. That, of course, means heads come off, yada, yada.




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[Valley Rock]

Like mentioned, drop the pan (not a big deal) give rods a visual inspection wiggle test, you may have just one or two that have a problem .
If you don't see or feel anything obvious, then start pulling rod caps and a couple main caps and see what you have .
You may get lucky and catch things before damage is done to the crank and get away with new bearings and oil pump .

But you're not going to know until you look .

The debris field within the pan and oil you drain out should be a great indicator of what you're dealing with .

There's no telling what the engine went through with previous owners, and maybe one of those rod bolts has loosened up on you .