Quantcast
Jump to content

Recommended Posts

Posted

My wife and I purchased two quads to run around on our off grid property one is a 1988 4 wheel drive Quad Runner which starts and runs great the other is a Suzuki LT F 300 King Quad 1999 model the 99 we are having cold starting issues with so the reason I signed up on this forum,it will start eventually after several minuets of feathering the throttle or holding throttle wide open and the choke (en richer) button fully off once it does start and warms up it seems to run really good and the choke seems to work because when you engage the choke while the engine is running it will stall the engine with the choke engaged

it has good spark,new spark plug ,good compression,new carburetor,new battery

I have purchased a manual online for the specific years,I am leaning towards it needing the valves adjusted but really unsure 

also I am going to ask what is probably a stupid question to some on here but the way I was taught is the only stupid question is the one you do not ask so here goes the manual I purchased online for the 99 states that the valve clearances for the LT F 300 should be set at Intake-0.03-0.08mm (0.001-0.003 In) and the Exhaust valve set at 0.17-0.22 (0.007-0.009 In) are those settings correct  now for the stupid part of my question no where in the online manual that I purchased does it state which valve is the Intake and which is the Exhaust valve so if someone can answer that it would be greatly appreciated 

 

Thanks in advance for any and all replies and help it is greatly appreciated

 

Posted

Is that new carb or an aftermarket carb set to factory settings or does it have a different jet in it? Any modifications like an aftermarket exhaust? On cold start, the choke should be fully on and at operating temp fully off. If you have it off and  to start it by giving it more gas, I think you have a carb/choke adjustment issue.

 

 

Posted
1 hour ago, Ajmboy said:

Is that new carb or an aftermarket carb set to factory settings or does it have a different jet in it? Any modifications like an aftermarket exhaust? On cold start, the choke should be fully on and at operating temp fully off. If you have it off and  to start it by giving it more gas, I think you have a carb/choke adjustment issue.

it is a new carb not after market with the choke fully on it will not even cough I was going to adjust the valves to spec and then go from there if I can figure out which is the exhaust valve and which is intake

1 hour ago, Ajmboy said:

 

 

 

Posted

well I finally got this all figured out it ended up being a tight intake valve

I took a compression reading before doing any adjustments it had an 80 psi reading I then adjusted the valves well only one really the intake valve was tight and the exhaust valve was dead on so I only had to adjust the intake valve once I made the adjustment,checked and re checked just to make sure I had it rite she started rite up with out to much cranking what really amazes me is just how much a tight intake valve on these quads can affect the compression

compression reading before intake valve adjustment again was 80 psi after the intake valve adjustment 160 psi which puts it with in the specs it is supposed to be was not to bad of a job for a green horn 

A suggestion I would make to everyone and anyone if you are having issues like I stated check your valves especially the intake valve as it does have a huge effect on compression on these things

  • Like 2
  • 2 months later...
Posted
On ‎4‎/‎30‎/‎2018 at 4:34 PM, DSMITH said:

My wife and I purchased two quads to run around on our off grid property one is a 1988 4 wheel drive Quad Runner which starts and runs great the other is a Suzuki LT F 300 King Quad 1999 model the 99 we are having cold starting issues with so the reason I signed up on this forum,it will start eventually after several minuets of feathering the throttle or holding throttle wide open and the choke (en richer) button fully off once it does start and warms up it seems to run really good and the choke seems to work because when you engage the choke while the engine is running it will stall the engine with the choke engaged

it has good spark,new spark plug ,good compression,new carburetor,new battery

I have purchased a manual online for the specific years,I am leaning towards it needing the valves adjusted but really unsure 

also I am going to ask what is probably a stupid question to some on here but the way I was taught is the only stupid question is the one you do not ask so here goes the manual I purchased online for the 99 states that the valve clearances for the LT F 300 should be set at Intake-0.03-0.08mm (0.001-0.003 In) and the Exhaust valve set at 0.17-0.22 (0.007-0.009 In) are those settings correct  now for the stupid part of my question no where in the online manual that I purchased does it state which valve is the Intake and which is the Exhaust valve so if someone can answer that it would be greatly appreciated 

 

Thanks in advance for any and all replies and help it is greatly appreciated

 

I had this same issue on the same atv.  Went on ebay and got a Chinese cdi box for 40 buck.. dealer and TV SHOP howled...one year later.. still going.

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.

  • Popular Now

  • Similar Forum Topics

    • By jay41198
      I am missing a cdi box for my 1988 Suzuki quadrunner LT 4WD is there a rplacement box that i can wire into this bike to get it back running beings that the cdi box is no longer made 
    • By Mikey69
      Heres my story. Kinda long. I guess I was a late bloomer when it comes to quads. I had never ridden a quad in my life. Rode Dirt Bikes as a kid growing up. Back in Oct of '06 I found a Mustang on craigslist. Took it for a test drive one morning before work. Fast car. 351 Cleveland. I had planned on meeting the guy again after work. For some strange reason thats still to this day beyond me, I stopped in Hillsboro MotoSports on the way home from work. I had 6 Grand on me. There was a left over '05 sitting by the front door. It was on sale for $4999. It was $5499 OTD. I didnt even look at anything else. I knew nothing about quads accept I thought it really looked coool and I had the money in my pocket to buy it. I was sitting on it when the salesman walked up and asked... "Can I help you?" Without hestitation I pulled 60 Ben Franklins outta my front pocket and said "I want this Quad. Load it up in my truck." It was just about dark by the time I drove away from the shop. BTW, I didnt bother to ask my ol lady if I could buy it. LOL. Anyway, I took it by the house and showed her. She was kinda stunned but not mad. We drove over to a friend of mines house and unloaded it. I took it to the field across the street from his house. HOLY CHIT!!!!! I was surprised by the power. I had it for about 2 weeks and took it to Sand Lake. I was there a few hours and rolled it on a banked turn at the top of the bowl right before you get to the one-ways. When it rolled, I flew off and landed on my belly. The quad came bouncing and landed on my back. For a month I couldnt even walk. I was scared of it. I considered trading it for a 250EX. Went back to the shop. The salesman said..."Dude!!! You dont want a 250EX!!! Trust me. Just get used to it" I still wasnt convinced. I put it on craigslist for $4000. Calls were coming in. I had a guy that wanted to come look at it that evening. I decided to take it for one last ride at Browns Camp before I sold it. I was still afraid of it. After about 5 minutes I started feeling comfortable on it again. I decided right then, I loved my Honda 450 and would learn how to ride it instead of selling it. That was late Nov of '06. Work was slow for a Painter in Oregon. My new job everyday? Going to Browns Camp and ridding my Quad. I bought my Girl Friend an '02 Blaster. I rode my 450 for 4-6 hours almost every single day for 3 months. And yes, I know my way around Browns Camp pretty well. LOL. In March I bought her an '06 TRX250EX (Thank God I didnt trade my 450 for one of those) LOL Since then, I have become totally addicted to quads. I love them. Couldnt imagine not owning at least one quad. Luckily I have two. My "07 was $6500 OTD in July of '07. Bought it for my Girlfriend. Traded in her 250 EX. A month later we broke up. So, I wound up with two Honda 450's.
       
    • By oztrax
      was thinking most of us on this forum would have another ride, so to get the ball rolling...........
      MY MAX 4 6X6 2009, now this will actually go anywhere including across the water. In the 3rd photo I had gone up the river about 30 meters then climbed up the bank, 6X6 owners call it "swimming" 
      MAX 4 6X6 2008 
    • By Shorty51
      Good morning, I am new to the forum. I'm 75 years old and love getting ATVs back to usable condition. I particularly like the 2006-2009 Arctic Cat 250 Utility. I currently own 6. The 2006 I am working on only has reverse and low gear. The "drive shaft" in the transmission is completely stripped where the high gear would mesh. Has anyone on here replaced the shaft. I'm told I have to split the case. I was hoping that someone on here could let me know how hard it will be. I already have it stripped down to where the shaft coming in from the clutch side is the only thing left. I was hoping I could just remove the driven clutch and drive it out from there. Directions say different. Any help would be greatly appreciated.
    • By LMI
      Hi all.  New to the forum & quads.  Seems like a great place full of info.
      I just recently picked up a 2005 Suzuki KingQuad LTA700.  I need a battery.  I've been reading up on conventional vs AGM types.  I have a Royal Distributing and Canadian Tire.  RD has 2 types avail for my year/Model a battery YTX16-BS CRANK $75, and BATTERY YTX20CH-BS YUASA $140.  Neither of these is the type from the manual FTZ16-BS.
      from what I can tell... I think the only difference is the capacity with the $75 unit rated at 14 AH/10HR and the $140 unit rated at 18 AH/10HR ... which is the rating in the manual for the FTZ16-BS.  How much does this make a difference for nearly x2 the cost?
      And about the models/type numbers.... what is important to know ... they all end in "-BS" but are the other details relevant or just manufacturer naming?
×
×
  • Create New...