Deutz Diesel Engine Starting Problems – Troubleshooting Deutz Engine Cranks But No Start

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by Bill
(Hartford ,AL USA)

I have an Ingersoll Rand 175 air compressor with a Deutz 3 cyl diesel F3L912 that i can’t get it to start.

(History) I bought the unit used about 18 months ago that was totally rebuild. I had been setting but after cleaning the tank out and bleeding I got it running and has been a good unit.
Recently Past 2 Weeks the engine on first start in the Morning would turn over but won’t fire until the 4 or 5th attempt.(lots of black Smoke out of the Exhaust) after warm up it would fire ok and run fine.

Now I can not get it to start at all. I thought it could be fuel pump issue so I replaced it, new fuel filter, oil + filter. Bleed and Bleed 30Xs.

Won’t fire off. Lots of black smoke and Carbon out of exhaust.

IR 175 compressor 3 cylinder Deutz motor
IR 175 compressor 3 cylinder Deutz motor

I took off air filters clean them ,removed the muffler ,blew it out tried starting with it off to no avail.Could not find anything blocking airflow intake or exhaust.

It’s almost like there is something electrical that keeping it from starting.

I do notice the speed flow regulator cylinder Has some sort of weep hole the when trying to start there is air being blown off.

I can get the engine to spin over longer with one of the injectors cracked then with it closed.

Could it be an injector Issue that keeping it from firing?

Timing with the valves?

Injector pump?

Maybe some sort of relay that I’m not aware of that not allowing start cycle.

I know of the belt tensioner sensor that has a shutdown. Is this pin supposed to be depressed or unobstructed? I tried running a jumper wire to it,no difference.

I know someone who has had one of the compressors might can give me some aid.

Nobody local that knows about them.


Deutz no start
by: Doug in

Does it use glow plugs?

If so, then the circuitry for those can be screwed up, consistent with the electrical theory.


No glow plugs on IR 175
by: Bill

It doesn’t have glow plugs.

(Up Date) After checking thru all circuits I wound up opening up an relief valve that was close to compressor pump. When trying to start, it would kinda run on for 5 seconds. After playing with it I got it to run and by continuing to hold in the fuel by-pass button for an extended length of time.

First it struggled to run (thinking injector #2 bad) then it finally caught on.

After it ran for a while and warm up it would fire right up. I’m waiting on an injector pull tool to service or replace them.


Deutz 3 cylinder
by: Doug in

Do you know if the injectors were replaced on the rebuild?

If so, then maybe you should recheck the fuel system for debris.

Thanks for the update, and keep us posted on the injector findings, please.


Waiting to pull
by: Bill

I’m still waiting on my injector pull tool. I’m going to pull them all in the next week or two. Check them ,service them or replace them.

th photos to help others help you with your compressor and equipment problem!

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I just bought mine at auction. It’s a 1989 model P175 with duetz 3 cyl engine. After I bought a new battery, I found the start button didn’t do anything. I jumped the starter solenoid and made it try to start (didn’t want to run it until I went through it- found oil separator tank empty). I only have the air bypass button, t-handle (assume that’s the fuel shut off), and a start push button. What else is in the circuit with the start button?

Typically, low engine oil, low fuel, maybe a temp sensor on the engine as well as the airend. Possible associated relays.
Is there a bypass button or switch? Some won’t start/run until there’s some air pressure.
Ya might just have to get out the old test light and try to trace it. I don’t think I’ve ever found a manual for one that old.

It’s a air bypass push button. It seems to only have the single function. Some of the newer models seem to have a power switch (toggle) but mine seems to only have to push in fuel t-handle and then push the start button. The air bypass just relieves pressure in order to start- correct? I found a manual for the same model but 2 or 3 years newer. It’s not all I’d hoped for but I’m getting there. Thanks for your help!

Yeah, there’s a gazillion models of these. I think you’ll find you’re supposed to let it run bypassed for three minute warmup. The button might start a timer on yours, dunno.
You’re welcome, and good luck!

Ran mine out of fuel/ Used pressure in fuel tank, while pinching return hose. Hose was badly dried out and crumbled. was able to get unit to start, while crimping damaged hose, ran fine. at end of day made new hose and replaced, now engine wont start, not been able to get fuel to injectors while attempting to bleed air,

Hate to say this, but with no return fuel line, the pump may have burned out or at least lost pressure. I’d look there.

thank you for the very quick reply. May have got lucky, I re bled the entire system by pressurizing the fuel tank again. This time made sure fuel was clear at the pump, filter in and out to pressure pump going to injectors. charged the batter to full, then cranked the engine, bleeding the injectors at the same time. fired right up.
rebled injectors an hour later and all seems well. it appears the pump is fine, time will tell.

Thanks for the success story.
Fingers crossed for ya!