Quantcast
Jump to content


2019 Hisun Sector 550 Hard Starting


kgs
Go to solution Solved by kgs,

Recommended Posts

Got a hisun sector 550 2019 that's got 5900 Miles on it, this year it started to getting hard to start in morning, once I get it started it works good the rest of the day. But to start it in the morning I got to hold the gas pedal to the floor and it will fire up. I replaced the fuel injector but didn't help it. So I just ordered a new air filter and 02 sensor and a maf sensor to put on it to see if this will fix it. Anyone else had this problem. I'm hoping the parts I ordered will fix it. I also bought a new battery to put in it also.

Link to comment
Share on other sites

  • Alex changed the title to 2019 Hisun Sector 550 Hard Starting

Well turning motor fan counterclockwise until valve is at top then move fan another 3/4 turn to make sure the lobe is off valve. I don't have any room at all to put a gage in It. seems like it keeps contact and no opening. Would this cause it hard to start but run fine once started.

Link to comment
Share on other sites

I think I'm going to put it back together and see about taking it to a shop and let them adjust them. I don't want to mess something up. I have rotated piston up two different times to check clearance on the up stroke and I can't get a gauge in but the motor is cold.

Link to comment
Share on other sites

When I took my plug out it was toast, changed it last summer. You can see it's running rich. I put it back together and it fired up a lot easier with new plug, but I know the valves need adjusted there is 5900 miles on it. So there is only two valves intake and exhaust, so if I have my pistol dead top of stroke with valve up then it's ready to loosen and adjust, then repeat for next valve, I just want to make sure I don't want to do something wrong and it won't run. Probably don't need the part's I ordered but I will keep them. Here's picture of old plug.

IMG_20221015_134520187.jpg

Link to comment
Share on other sites

So if you have a hisun sector 550 it's a 4 stroke, which means the piston goes up twice before you get the compression stroke. Set piston TDC on compression stroke then adjust both valves to 5 thousands clearance. My utv runs like the day I bought it from this fix. 

Link to comment
Share on other sites

  • 11 months later...
On 10/14/2022 at 2:08 PM, kgs said:

Got a hisun sector 550 2019 that's got 5900 Miles on it, this year it started to getting hard to start in morning, once I get it started it works good the rest of the day. But to start it in the morning I got to hold the gas pedal to the floor and it will fire up. I replaced the fuel injector but didn't help it. So I just ordered a new air filter and 02 sensor and a maf sensor to put on it to see if this will fix it. Anyone else had this problem. I'm hoping the parts I ordered will fix it. I also bought a new battery to put in it also.

I have the same issue with mine right now done change the same parts and no luck if you happen to figure it out help would be appreciated 

Link to comment
Share on other sites

  • 7 months later...
  • 3 weeks later...

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 didgeridoo
      Hello, All!  I've decided to replace the traction batteries in my 2018 Sector E1 with a 48V Lithium set. They may be expensive, but I figure the Discovery Dry Cell are, too. I am not looking for the max driving range, as I have never received near the brochured range to begin with, but a good mix of charge/ get work done/ charge is what I am expecting.
      I have settled on the 48V EAGL kit from bigbattery dot com. Each battery pack provides 30Ah. The kit ships with a charger, as well. The packs would be physically connected in parallel (using a busbar) to one another, maintaining the 48V voltage, but together would be able to provide the amp draw the buggy pulls when going up hill or towing a rake (rated 320 max continuous Amps). This is in comparison to the serial connection the eight 6V lead batteries. Each of the EAGL batteries looks to have its own BMS; am I correct in thinking I will have to use their included charger rather than (simply) changing the onboard charger to lithium mode? The chemistry of the pack is LiFe PO4, for what it's worth.  I haven't torn anything apart yet (to diagram), so  I am not sure how the dash will interpret the AMP draw, but the kit I am looking at includes a dash mounted charge indicator.
      If anyone has completed a similar conversion, do you have any tips? Specifically, how did you remove the original batteries, and how did you secure the new ones? I am guessing that almost any change from the stock batteries would involve at least some modifications. Any tips would be appreciated, especially things I may have failed to consider. Thanks!
    • By BuggyBoy
      So these Giant 48v/110ah batteries have just become available: https://www.aussiebatteries.com.au/giant-100ah-48v-lithium-golf-cart-deep-cycle-battery
      They look like they could drop in either side of the Controller that sits in the middle of the tray as they are 330mm(W) 355(L) 295mm(H). They can be paralleled, and I think two should be enough. Technically once paralleled the system should output 400ah continuous and 800ah Max (5 secs), more than enough for the E1 - probably 1/3rd more than is needed.
      However, the sales person stated that if the regen braking exceeded 400amps, it would put the batteries in standby mode for protection and they would have to be 're-started' with a jumper pack to reset them. Does anybody know the max output of the E1 Regen system, and if it does exceed that, is it possible to disable/bypass the regen so it has a zero output?
      Thanks.
       
    • By Alien10
      A while back I was looking at an auction UTV plow and the mounting of it.  Looked like it had an "H" bar with two pins that hooked into brackets on the front frame of the UTV.   I have a bunch of 1/4" x2" angle iron, and some 2"x1/2" flat stock in the barn.   I was thinking of welding up a bolt on implement mount that would provide 2 holes about 14" apart, that pins could be used to hook up an "H" frame for a plow or even a straight bar across with pins to hold it in place.   The angle iron "A" would utilize the existing bumper mounting bolts front and bottom, and have the two channels "B" with holes for individual pins or one large bar across. Those channels would be welded to the ends of the angle iron. 
      Anyone ever try this for a front mount?   It would be close to  this one that is for sale on the net.  It is supposed to fit a KFI plow mount.  

       
    • By Pop Bob
      After 10 hours of use, my machine had developed a low speed brake squeal. I removed the brake assembly and discovered that everything was put together dry. Not even lubrication on the caliper pins. After lubricating and reassembly, the squeal has disappeared. I will do the other three wheels today. Also, all grease fittings were under-greased (if at all) based on the amount of grease filled before they purged. This includes the drivelines. Next- I found many screws which were loose and/or stripped. I was able to tighten or fix them with my tap and die set. The lower a-arms on the front do not have grease zerks. I will remove the arms and install some. I guess I’m not surprised or even disappointed. These are just things that should be looked at on any machine. One thing I am pissed about though, is this “weld from hell” on the front . Totally unacceptable. For sure there will be water entry and eventual internal rust. 
      (see photo) I will fix it. I did an oil and filter change which some of you will say was not necessary. But break-in time is when you are most likely to have contamination from production and initial wear-in. BTW there was some metal in the filter. Cheap insurance to change often. Engine access is very difficult on this machine compared to other  models. You have to remove lots of stuff to get to it. But I still like the machine very much, and I’m having a ball with it. Future plans include lights, cab enclosure and heater. Winters are long in Northern Michigan. 
      PB
    • By Gorj
      Yesterday my Hisun Sector E1 stopped charging when plugged in. Anyone one have an idea of where to look for a problem?
×
×
  • Create New...