Anitomical

The intake seat is squished

Probably, I believe it’s a high mileage quad anyways, the speedometer isn’t working, but I believe the what is says is pretty high already. I’ll tear into it later, it’s been raining so much so I have to wait until it calms down.

I didn’t know of any valve stretching either but it was the only thing I could think of at the time. I believe it might be the valve seat being squished?

I have a 87 Quadrunner LT-4WD and it’s been acting weird every since I got it. I don’t know if it’s common or not but it seems that the intake valve itself is stretching because I used to have to almost constantly readjust it but now, that bolt or screw or whatever it’s called that pushes down the spring, if I take that fully out there’s still no play in the rocker but it has compression when I did that (I didn’t run it like that). So I took the valve cover off and the valve didn’t seem to be any longer than it should be and the rocker seemed fine? I don’t know what’s happening and I don’t know what to do or if it’s causing the problem I’ve been originally having. The original problem was it would sputter at like mid to high range rpm, I changed the main jet to something bigger and changed the fuel pump too but still no luck. I have the air to fuel ratio out to about 2 and a half turns and it seems to be the right amount cause the spark plug is brown, but once it gets in the rpm’s it just hiccups but doesn’t bog or shut off. IMG_0123.MOV IMG_0124.MOV

I've seen this just I didn't want to take the risk of it because it also shows a picture of the OEM lightbulb and I didn't know if that was basically what they were going to send 😅 I'll probably get these and a small lightbar or pod like TBRider said. Thank you for helping me look for one of these though, much appreciated!

I normally don't ride with people, but you kinda need brighter lights where I live because it's hard for people to see you and people like to go fast on this road. Only one light is working right now and even with both of the lights, you can barely see 5 foot in front of you, so that's not very ideal for making sure there's no deer or bear in front of you (or people walking). Also I've been somewhat thinking about getting accessory lights but I don't really have the time for the wiring and the fabrication of the mounts. Also for the LEDs you don't have to modify anything, it's basically the same as the OEM.

Alright, well I'm posting this on here cause yet again, the suzuki forums ain't responding (I like this community a lot more, I should probably just buy a honda at this point lol). But I need to buy new lights for my quadrunner, preferably LED ones but I can only find the ones with connections like this (first link) and the ones on the quadrunner are like this (second link). I was wondering if these would still work or not. https://www.amazon.com/SHENKENUO-Motorcycle-Headlight-1500LM-Yamaha/dp/B08N5XZG4D/ref=sr_1_6?crid=36KU69W1T372C&keywords=Led+lights+for+suzuki+quadrunner&qid=1649463227&sprefix=led+lights+for+suzuki+quadrunner%2Caps%2C59&sr=8-6 https://www.ebay.com/itm/294095646377?chn=ps&_trkparms=ispr%3D1&amdata=enc%3A1ekke-Yz9Rr6RNeSZIKCbqw68&norover=1&mkevt=1&mkrid=711-117182-37290-0&mkcid=2&itemid=294095646377&targetid=1644837435763&device=c&mktype=&googleloc=9006554&poi=&campaignid=16743749222&mkgroupid=138744546207&rlsatarget=pla-1644837435763&abcId=9300842&merchantid=6324134&gclid=Cj0KCQjwgMqSBhDCARIsAIIVN1WAow05a75gjZv4p9JzEwtSr8kFyqsAVNVI8M2reN2N6Xm6IJROwhsaAjXSEALw_wcB (Also I'm not planning on buying those exact LED lights, just that one shows the connection points the best.)

Also I just said "screw it" and I bent the timing chain guild back in place and put everything back together. And now it runs but if you rev it up it has some timing chain rattle so I'm just not gonna even try to use it. And I found out that it sounds extremely loud (louder than expected) and sounds horrible without a muffler, I just decided to leave it off for the ! and giggles

Absolutely no idea what caused it. When it happened I was barely in the throttle so its not like it had an extreme load on it or anything. Heck, I used to move a truck around with it with no issues.

I'm sorry it took me so long to respond, I've been extremely busy. I've gotten the time to take off the stator side cover off and this is what I found. The time chain guild was also very twisted up. The oil has a little bit of dirt and debris on it because it was very muddy out the last time it was used so that got into the oil some. It also seemed very low on oil somehow, I had everything sealed up properly so I have no clue how it was leaking, I didn't even see any oil marks from where I had it parked. 20220312_231414.mp4

It still will not turn over, I will probably take of the subtransmission side tomorrow

Well I do know that when I first got it running it was very rich but I leaned it out some so there might've been left over gas in the oil maybe? I mean someone might've sabotaged me but I would have no clue why. This town is an extremely nice town and I don't have any problems with anyone. I do remember seeing some dirt bike tracks on my property the other day but I doubt they were the ones who put water in my oil because there was no tracks near my quad. Also I tore the head off last night, and everything looked fine. The piston had a little extra deposits on it, but that was when it was first running and it was very rich. Everything else seems fine, there's no up and down play in the piston, it stopped at BTD and the cylinder walls looked fine, no scratches or anything. Edit: And the valves were seated perfectly, they weren't bent, and it stayed in time.

I only have 1 neighbor and he lives like 2 miles away and he's the nicest person I've ever met. It's still air cooled and no I didnt go through any water, it did rain recently but I had it covered with a tarp. I made sure I put gasket sealer and gaskets on everything I took off too. The oil was fresh so I have no clue how it turned white. And the weird part is, it was mostly at the oil cap. I drained the oil and it seemed grey, not pure white. But at the cap it was pure white

Well, I got it running perfectly 3 days ago, rode it here and there, not much or hard. And I was cruising down a hill going 25mph in 4th gear barely on the throttle, and then it randomly sputters and shuts off. This always used to happen with 4th and 5th gear if you're in that gear for to long, I believe 90% of 300 king quads are like that so I wasn't worried. I gave it a minute and I tried to start it again and it sounded wayyy off, it was barely starting and it would only stay running if I kept on the starter. So I decided to put the choke on, and then try again... well I tried again and it wouldn't even turn over, not even with the pull start. I got it towed back to my house and I took the oil cap off, and it was pure white. And it's air cooled so there's no way it could be coolant. I had everything perfectly sealed up so how would water even get in there? It obviously blew up already and I'm just done with it.

No I have not, I've owned it for about 7 years now and only really used it for about 3. The carb is 100% original, the guy who gave us it wasn't really into doing carbs and such. I believe he tried to take it apart once but he stripped the bolts. I was able to get the bowl off, and so far I got the main jet and what I believe to be the pilot jet. There's a middle jet that is completely seized in there and I can't get it out, but both of the jets were completely clean.

Its definitely running rich, so I guess I'll take the carb off for the fourth time and figure out what's up. I feel like it could be what jeepwm69 said or the pilot jet might be clogged so all the gas is going through the main jet? 20220227_134755.mp4

Also when I turn the idle all the way up, it doesn't even change rpm, same for all the way down.

Looks like I might have to take the carb apart then because this is probably what's happening...

I'm truly at a lose for words? I tried it just now, and it didn't work, but randomly it worked and I went to adjust the idle because it was way to low and then it shut off and then I turned it back on (it didn't want to start at first) went back to the extremely high idle. Then I decided to give it some manual choke (hand slightly over the intake) and it idled down but when I went to go rev it a little, it just died. Then I decided to take out the spark plug to see if that had any signs of if it was running rich or lean... and when I took it out it was covered in soot. Like I rubbed my finger across it lightly and it instantly looked cleaner. I'm at a complete lose of words and I have no clue why it's doing this. When I had the carb off, I adjusted the A/F screw to about 1 and a half turns, I believe it was at about 2 and a half. I want to adjust the A/F again but it's at the bottom of the carb and you can't get to it unless you take it off which is ! to put back on. (Also when I rev it up in general, it sometimes stays at that rpm for a few seconds without lowering in rpm? That's without the manual choke.)

I don't believe so, but I remember when I put the cable back on, right before I did I turned the idle knob until it was just barely touching the thing. And as soon as I put the cable on, it was about a centimeter off of the idle knob. Also I did think about the whole rerouting thing so I tried multiple routes and it was always the same. But I'm pretty sure the high idle was because of the intake boot might've been leaking. The reason I think that is not only because of how hot the exhaust was getting almost instantly, but when I put the choke on it idled down to where it should be

Well I was gonna start it today, but it doesn't have enough gas to fill the bowl, so tomorrow I will try to get gas and then prime the carb and then I'll update y'all later tomorrow

I took the intake boot off last night and put gasket sealer on it to see if that will help, I need to put the carburetor and stuff back on later to see if that worked

I was thinking about doing that last part, but nothing is frozen and everything works as it should. And I don't believe it's the jets because it's a OEM style piston Also I tried to move it under it's own power and it just took off and I wasn't even on the throttle, I shut it off immediately so i didnt ruin anything

20220224_184841.mp4

It has a oem carb, no because the bolts are completely stripped so I can't take off the bowl, and it has a enrichment plunger. I didn't mess with anything when I took the carb off and when I put it back on, I kept the carb in a clean environment so it shouldn't be that bad? But yet again, I'm not fully sure. I also have another video that I just took with it idling after a minute (not good by the way)...