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  1. #1
    New Member
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    Jun 2010
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    13
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    Nashville TN
    Tractor
    New Holland T1510; Massey Ferguson 135 Continental gas

    Default MF 135 Continental gas- losing power

    I've got a '68 (or maybe '67) MF 135 with a Continental 4 cylinder gas engine. Starts great, but after the engine warms up after 10 or 15 minutes, I lose power and it stalls/cuts out. I can re-start after full choke, but it cuts out again when I accelerate. Especially noticable with the PTO engaged finishing mower. Prior to it cutting out, the engine temp always operated in the normal range, never over heated. Any advice would be appreciated.

    I inherited this iron maiden from my Dad about 20 years ago and up until this past April (bought a New Holland T1510), I used it to mow about 5 acres, pull an occasional stump and plow/disc a small garden plot. My grand pa bought the MF new back in the 60's. I have the original owners manual, plow, disc and blade. I've taken good care of it with routine maintenance, always stored in the barn, etc. I am ready to do a complete body and engine restore once I get motivated.

    My plugs look good, haven't checked points and distributor yet although I am guessing I will need to rebuild the engine due to power loss- it's never been re-built to my knowledge. I'll post some pics soon. Any advice would be appreciated.

  2. #2
    Advertiser sweettractors's Avatar
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    Jul 2003
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    7,147
    Location
    Central Kentucky
    Tractor
    JD 6403 CHA-JD 3130 CHA

    Default Re: MF 135 Continental gas- losing power

    I suppose you have already checked intake air flow? What kinda oil pressure is it running? Ken Sweet
    http://www.sweetfarms.com/

    Sweet Farm Equipment LLC (Internet Sales, Shipping All States)
    Shipping Facility
    1815 Defries Rd., Canmer, Ky 42722 Toll Free 1-866-528-3323
    Ken Sweet sweet@scrtc.com

    Shipping Example: Can ship 800 lbs from Ky. to Dallas for $165
    The Northeast shipping corridor is a little more expensive.

  3. #3
    New Member
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    Jun 2010
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    13
    Location
    Nashville TN
    Tractor
    New Holland T1510; Massey Ferguson 135 Continental gas

    Default Re: MF 135 Continental gas- losing power

    I checked the intake and the air is flowing good, clean filter. I'll need to buy me an oil pressure gauge and diagnose. In the meantime, I'll change the oil and filter and see if this helps.

  4. #4
    Advertiser sweettractors's Avatar
    Join Date
    Jul 2003
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    7,147
    Location
    Central Kentucky
    Tractor
    JD 6403 CHA-JD 3130 CHA

    Default Re: MF 135 Continental gas- losing power

    My mechanic said check the carburetor function and also check for a leaky intake manifold gasket. Ken Sweet
    http://www.sweetfarms.com/

    Sweet Farm Equipment LLC (Internet Sales, Shipping All States)
    Shipping Facility
    1815 Defries Rd., Canmer, Ky 42722 Toll Free 1-866-528-3323
    Ken Sweet sweet@scrtc.com

    Shipping Example: Can ship 800 lbs from Ky. to Dallas for $165
    The Northeast shipping corridor is a little more expensive.

  5. #5
    New Member
    Join Date
    Jun 2010
    Posts
    13
    Location
    Nashville TN
    Tractor
    New Holland T1510; Massey Ferguson 135 Continental gas

    Default Re: MF 135 Continental gas- losing power

    Thanks a bunch Ken. I replaced the intake and exhaust manifold gaskets 2 years ago and they appear solid and tight, no leaks there. I'll give the carburetor a good cleaning and see if this helps.

  6. #6
    Veteran Member K7LN's Avatar
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    Feb 2009
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    1,545
    Location
    Michigan
    Tractor
    JD455 & JD790

    Default Re: MF 135 Continental gas- losing power

    Quote Originally Posted by nashvegas View Post
    I'll give the carburetor a good cleaning and see if this helps.
    Check points and distributor first. Then before you dig into the carb, check your fuel pump pressure. if it's a gravity system, make sure you have a good flow and the cap if venting. If it runs good for 10-15 minutes, I doubt that you'll have to deal with major engine work.
    Last edited by K7LN; 08-10-2010 at 01:29 PM.
    JD 790 w/70 FEL & 7 BH on turf tires
    JD 455 w/60" MMM & 54" front blade

  7. #7
    Advertiser sweettractors's Avatar
    Join Date
    Jul 2003
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    7,147
    Location
    Central Kentucky
    Tractor
    JD 6403 CHA-JD 3130 CHA

    Default Re: MF 135 Continental gas- losing power

    I just thought of something else, The Fuel coming from the tank could be restricted around the tanks outlet or in the settling bulb area. Ken Sweet
    http://www.sweetfarms.com/

    Sweet Farm Equipment LLC (Internet Sales, Shipping All States)
    Shipping Facility
    1815 Defries Rd., Canmer, Ky 42722 Toll Free 1-866-528-3323
    Ken Sweet sweet@scrtc.com

    Shipping Example: Can ship 800 lbs from Ky. to Dallas for $165
    The Northeast shipping corridor is a little more expensive.

  8. #8
    Veteran Member Mike476's Avatar
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    Jun 2010
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    1,080
    Location
    Annapolis Valley, Nova Scotia
    Tractor
    MF 135 Z134 Continental, MF 1660 Cab

    Default Re: MF 135 Continental gas- losing power

    Checking for fuel first (take the line off at the carb) is a good idea. If there is fuel but your not sure if it is enough flow take a look at the screen filter at the top of the glass bowl, mine has been fairly restricted with debris in the past.

  9. #9
    Veteran Member Mike476's Avatar
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    Jun 2010
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    1,080
    Location
    Annapolis Valley, Nova Scotia
    Tractor
    MF 135 Z134 Continental, MF 1660 Cab

    Default Re: MF 135 Continental gas- losing power

    Was wondering if you have had a chance to find your problem, might be something I have to deal with myself some day with my 135 continental.

  10. #10
    New Member
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    Jun 2010
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    13
    Location
    Nashville TN
    Tractor
    New Holland T1510; Massey Ferguson 135 Continental gas

    Default Re: MF 135 Continental gas- losing power

    Thanks for all the advice. I've been out of town for the past week and traveling - I'll post an update once I get back into town later this month. I've got a bunch of stumps to pull out so I've got to get working on a fix quickly.

    BTW, if anyone needs replacement blades for their finishing mower- check out www.mowpart.com...bought a set of 3 blades for my Befco "72 deck for less than $65.00

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