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Massey Harris & Massey Ferguson Tractors Discussion Forum
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MF 135 Diesel wont start

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lshaffer1957

09-30-2023 18:44:19




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Hi All

I have a 3 cylinder Perkins MF 135. Early this year used it a once with no problems. Then in April went out to start mowing and it wouldn't start...turns over but no start. Changed fuel filter (NOT NAPA BUT ONE FOR IT), air filter, had the injector pump and injectors checked-the injector had a worn endcap which they replaced. Battery is good. Still no joy won't start. I am at a loss. My husband who bought the tractor knew about these things he passed so my brother who is not familiar with diesels has been helping me but with all this still won't start. Getting good fuel to the injectors. Hit it with a small shot of starting fluid and will start with that (I KNOW THIS IS NOT TO BE USED) but dies after the starting fluid burns offs a few seconds but trying anything and everything. Can somebody give me some ideas what could be wrong....I really need this to mow my place is a mess with all these high weeds been working through all the problems since April.

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hearnc843

10-07-2023 15:03:58




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 Re: MF 135 Diesel wont start in reply to lshaffer1957, 09-30-2023 18:44:19  
I agree Randy, it does sound like a fuel problem. I would start with the injector lines first- crack the nut a little on each of the injector lines, just above the injectors on the block, like you would to bleed out the air. Then when you turn it over to start it, there should be a rhythmic spurting out of each injector.

There is fine line of having the injector line nuts too lose or too tight. Start by cracking them a little, and progressively more after each starting attempt, until fuel starts shooting out. Don't over loosen them too quickly. Give the started a few minutes in-between tests so that you don't burn it out to quick.

This will make a mess, but will at least tell you if you are getting fuel to the injectors.

Good luck

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Clarkbug

10-02-2023 13:58:51




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 Re: MF 135 Diesel wont start in reply to lshaffer1957, 09-30-2023 18:44:19  
Is it possible the injection pump timing got thrown off when it was reinstalled?
I dont have experience with this like the others here do, but my understanding is that there is a slotted hole for the pump that allow for some rotation that will impact the timing. I dont know if this would throw it off enough that it wouldnt allow the engine to fire up, but just a thought to look into while you are troubleshooting.

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MF#1

10-01-2023 18:57:26




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 Re: MF 135 Diesel wont start in reply to lshaffer1957, 09-30-2023 18:44:19  
When you posted in May you stated I do have a slight leak on the fuel pump, wonder if this could be causing can't tighten any tighter. Is the leak on the injector pump or the Lift/transfer pump? There could be a crack in the line that allows it to lose prime over time. You also stated it would start then quit, I'm guessing now it won't start at all. When the Lift/transfer pump was replaced did you check for good flow from the tank? I've had the line from the tank to the lift pump get plugged something awful with rust particles from the inside of the tank. How long are you cranking when attempting a start? It takes a fully charged battery and several attempts before it will get going, ensuring you aren't over cranking to keep from burning up the starter.

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lshaffer1957

10-01-2023 12:30:19




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 Re: MF 135 Diesel wont start in reply to lshaffer1957, 09-30-2023 18:44:19  
a few months old now...but when this all started was new fuel.



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lshaffer1957

10-01-2023 12:29:35




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 Re: MF 135 Diesel wont start in reply to lshaffer1957, 09-30-2023 18:44:19  

Thank you for your condoloscences on the loss of my husband.
I took it (injector pump and injectors) to a diesel shop to have it checked out - feel confident they did it correctly. We have bled the lines numerous times, the "bad transfer pump" is this the lift pump - replaced that found where it was cracked. Yes on spewing fuel, the fuel shutoff was not all the way open when attempting to start but getting good fuel output at all the places you do to rid the air, yes checked shut off cable working appropriately and not engaged when trying to start. Bad fuel? do you think the fuel would go bad this fast in this weather...the fuel tank seems clean - have emptied it as we did to get the injectors off, but did replace it with the fuel we took out - looks clean. Would possibly any kind of fuel additive help? I know the Diesel Shop person highly recommended Stanadyne.
When this started in the spring, started the process when it wouldn't start - plenty of fuel, battery good - fuel filter was filthy...not something I thought to change out using it no more than I do. Made the mistake of getting a filter from Napa and of course took a minute but realized the oring was covering the part of the filter, removed it, but have since gotten a fuel filter made for MF 135. Went ahead and replaced air filter it wasn't bad, but trying anything and everyting. I really appreciate your ideas..

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MF#1

10-01-2023 08:33:32




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 Re: MF 135 Diesel wont start in reply to lshaffer1957, 09-30-2023 18:44:19  
My condolences to you for the loss of your husband.
How was the injector pump checked out? If it was removed and tested properly it could be eliminated as a cause. Was the top cover removed and the spring removed from the key? If so then it could have been placed in the wrong hole causing issues like yours. Diesels need fuel, air, and compression, nothing more. Agree with RandyC, sounds like a fuel problem, could be an air leak, plugged fuel line, bad transfer pump, poorly sealed filter, or bad fuel with algae or rust particles falling off the inside of the tank. When you bleed the fuel system does the transfer pump spew fuel from the top small bleed nut? Is the fuel shutoff on the tank opened up fully? Was the fuel shut off cable that is used to shut down the engine checked for operation at the top cover of the injector pump? If ONE of these things is not working properly you won't get it started.

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RandyC

09-30-2023 21:47:27




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 Re: MF 135 Diesel wont start in reply to lshaffer1957, 09-30-2023 18:44:19  
If it starts with starting fluid then dies it sounds like a fuel problem. Have you bled all the air out of the line ? How old is the fuel in it ?



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