Quantcast
Jump to content

TimMassimo

2017 Massimo 700-5 Coolant system trouble

Recommended Posts

Hello. I have a 2017 Massimo 700-5. I have recently had the head gasket replaced with the head and base machines, all gaskets, valve seals, piston rings and a coolant flush. I drove it for about a total of two hours at different times and days and now the coolant is not reaching the head when it is running. I have tried to bleed it by jacking up the front end using the top screw in the water pump screw and get all the air out. After I run it for a few minutes the coolant get stuck in the radiator and it won’t circulate back to the head as it should.  Has anyone run into this? I’m not sure if there’s air in the system or the water pump does not work?  

Share this post


Link to post
Share on other sites


Well, is the radiator getting hot? Feel the hoses at the radiator, and if they are hot, the water pump is pushing coolant. I see you have a new head gasket, etc., but it almost sounds like a blown head gasket which is causing enough pressure to keep the coolant from reaching the head. 

Also, sometimes it takes several attempts to get all the air out of the system. It can be a royal pain to deal with. Just don't let it overheat! These engines don't respond well to an overheating issue. I'm sure a member here (Joe Breaux) can shed some light on your problem. 

  • Like 1

Share this post


Link to post
Share on other sites

T-Boss 410, thank you for replying.  The radiator is cold at all times.  When I got it home it ran great and the coolant was cycling properly- then just stopped cycling randomly.  I was told the coolant system may need to “burp” although not sure how that works short of the normal bleeding process. Thanks again!

Share this post


Link to post
Share on other sites

Better check your thermostat, too. It may not be opening, which would not allow the coolant to circulate and run through the radiator. 

  • Like 1

Share this post


Link to post
Share on other sites

I don’t believe there is a thermostat as the mechanic did not put one in- couldn’t find a match to fit. I will try to run it at idle and add coolant as it burps out and hope for the best.  The next step is to replace the water pump if that doesn’t work.

Thank you for help!

Share this post


Link to post
Share on other sites


On 11/30/2020 at 5:50 PM, TimMassimo said:

I don’t believe there is a thermostat as the mechanic did not put one in- couldn’t find a match to fit. I will try to run it at idle and add coolant as it burps out and hope for the best.  The next step is to replace the water pump if that doesn’t work.

Thank you for help!

Looking at a water pump when it's in the hand is usually pretty easy to diagnose, because it'll turn roughly, with grinding, or be loose with sloppiness in the shaft. Lots of rust, leaking at the shaft, etc. Any one of these fairly obvious problems means a bad pump. 

Maybe just pulling the belt off and spin it freehand, and do a good visual check too. Or worst case, you have to pull it off to check it. If it's determined to be good, you're only out the price of gaskets. So I'd check it out before I just replaced it. 

I've heard of serpentine belts, that could be routed backwards over the water pump. Making the thing spin backwards. I'd consider that a severe longshot. 

Personally I'd suspect air in it, except for the fact that it was working good before. That seems a bit strange. But what's not uncommon is having to purge the air a couple times, or more on some vehicles. As you said, just keep topping it off for a few short drive cycles. See what happens. 

Share this post


Link to post
Share on other sites

On mine it has a vent screw at  the pump and at the hose outlet on the head.. You must bleed out the air repeatedly from both as you add coolant with caps off .. if there is any air, the water will not flow .. you can drive it til the end of time and that air wont move by itself.  You have to get it out ...Overheating is a major issue with Massimo ... 

Share this post


Link to post
Share on other sites
17 hours ago, kenfain said:

Looking at a water pump when it's in the hand is usually pretty easy to diagnose, because it'll turn roughly, with grinding, or be loose with sloppiness in the shaft. Lots of rust, leaking at the shaft, etc. Any one of these fairly obvious problems means a bad pump. 

Maybe just pulling the belt off and spin it freehand, and do a good visual check too. Or worst case, you have to pull it off to check it. If it's determined to be good, you're only out the price of gaskets. So I'd check it out before I just replaced it. 

I've heard of serpentine belts, that could be routed backwards over the water pump. Making the thing spin backwards. I'd consider that a severe longshot. 

Personally I'd suspect air in it, except for the fact that it was working good before. That seems a bit strange. But what's not uncommon is having to purge the air a couple times, or more on some vehicles. As you said, just keep topping it off for a few short drive cycles. See what happens. 

Thank you for the insight. I haven’t taken the cover off the water pump yet but now I’ll know what to look for. It is strange that it was fine for the first run of about an hour and now not so much.  Generally I don’t run it for more than 30 minutes or so since I’ve had it back. Thanks!!

Share this post


Link to post
Share on other sites
4 hours ago, Joe Breaux said:

On mine it has a vent screw at  the pump and at the hose outlet on the head.. You must bleed out the air repeatedly from both as you add coolant with caps off .. if there is any air, the water will not flow .. you can drive it til the end of time and that air wont move by itself.  You have to get it out ...Overheating is a major issue with Massimo ... 

I just found the screw at the pump but my mechanic didn’t know there was one there, only the top screw. It must be air bound. Thank you!!

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Similar Topics

    • By Bentley76
      I am working on a ride for a friend of mine, it is a Gunner 250. Machine was parked last year because it wouldn't idle right. It would idle way up then back down to almost stalling so they parked it. His kid now wants to ride it again so we've gotten it out. First thing we did was drain old gas and re-fill. Changed filter and spark plug. It will start right up but immediately dies. Checked for fuel pressure it and it is good. You can spray starting fluid in fuel injection and it will do the same thing. Fires right up then dies. Anyone have a clue what this could be? I appreciate any help I can get! Thanks
    • By Liv4upoutdoors
      I just got an enclosure today from Vista Quad Gear on Amazon.  I'm sharing this info because I was surprised at the quality of it and the price.  It came a week early.   I put it on today.  Its not perfect.  I need to extend the bottom of the door toward the front step but other then that I'm extremely happy with.   Front by the windshield is about 2 inchs short but w/ velcro no problem.    I priced building a cover/enclosure myself.   For this delivered price its well worth it.  If your looking for an enclosure for a 410 t boss this is it.  Comes in camo or black.  Will try and attach pictures and a link to amazon.  p.s. I have no ties to this company.  lol..... I just want others to know it will fit a t boss 410.  😉  https://www.amazon.com/gp/product/B00TPUBKH8/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1


    • By johnpeter
      2017 Can-am X3 XDS TURBO On Ebay
      https://www.ebay.com/itm/2017-canam-x3-xds-turbo-can-am-rzr/293941368771?

    • By Liv4upoutdoors
      I just bought a 2019  MSU 400 w/ 700 miles.  I got it home yesterday and noticed a faint rubber burning smell.  I can't track it down.  I'm on dirt so its not tires and pavement.  Parking brake is off.  Temp on the machine appears fine.  Thx for any suggestions   I thought maybe belt but I'm not racing nor going but a mile or two.   
    • By strike250
      I have the factory service manual available for the Buck 400. Just send me a message with your email and I'll get it to you. Although there is no charge for this, it would be great if  you would visit my website where you could donate any amount to help do things like this with others who need it. Again, there is no charge for this manual, and no obligation to donate. But if you did, I would thank you for sure. Have fun on the trails. www.warriorsoffroad.com
       
      Matt



×
×
  • Create New...