Trying to get DRZ 110 running

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ianwodie

Hi, I am 100% new to this forum. I have a drz 110 4 stroke that has been sitting for a while and I'm trying to get it to run. I replaced the spark plug and cleaned out the carburetor as best I could. I was able to start it up today, but the engine was just constantly revving in neutral without me touching the throttle at all. Any ideas on what to do next? Thanks to anyone who can help out.
 
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Mojavekid18

Mojavekid18

something is screwed up in the carb or throttle system. I would start by makeing sure the throttle cable is functioning properly at the carb and go from there
 
jackson409

jackson409

remove carb and clean again. You can clean these buggers until you're blue in the face and still miss something. Completely dissemble and soak it in cleaner for a day. run wire up and in and out of every little hole and spray cleaner in them while doing it. put it back together and try again.
 
2smoke

2smoke

Sounds like an air leak in the rubber boots on either side. Check those for dry rot and cracks. If its getting extra air from somewhere it could cause it to surge like youve described. Also how fresh is the fuel? Sour (old) fuel will make your bike run crappy also. Remove the filter bowl and make sure that there isnt any debris or water. Pull the main and pilot (slow) jets. Spray them out with carb cleaner. Make sure the atomization holes arent clogged. Word of Caution on this. If your jets are clogged I dont recommend trying to clear them with anything other than carb cleaner or let them soak in fresh fuel the try to blow them out with carb cleaner. If you change the openings on the carb by trying to poke out debris. You risk changing the opening size or making it worse. If the jets are clogged and you cannot clean them out its just better to replace them. They arent that expensive. Id say at or near $10 for the pair.
 
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ianwodie

Sorry for not being more specific about what I have done so far. So here it is in more detail: There was indeed old nasty fuel in the tank, which I dumped out and replaced with fresh gas. (It's not motorcycle specific, I'm not sure if that matters.) I disassembled the entire carburetor and soaked it in Sea-Foam, which isn't very heavy duty I know, but I was able to poke a safety pin through all of the jets and openings. I replaced one of the jets, which was completely clogged, and all the others seemed to be clear. I didn't notice any boots or hoses that looked dry rotted or anything like that. But I was able to start it, so that means fuel must be getting into the carb right? I think there is a problem with the throttle, because it felt very loose and only seemed like it was only pulling on the line when is was practically all the way twisted back. How do I check/fix the throttle, or is there something else I'm missing? Thanks for the replies btw
 
bobkyle2

bobkyle2

Pull the seat and gastank off, but leave the fuel line on it... Start it up and watch the throttle cable as you turn the bars back and forth... If the cable gets too tight, you probably need to reroute the cable.
 
I

ianwodie

I figured out the problem with the throttle. When I put it back in before, I just squished the spring on in there instead of lining it up properly, but that's fixed now. However... now it won't do anything. Just a little rumble when trying to start it, then it dies, whether the choke is in or out. I can post pics, but not really sure what to take photos of or how it will help
 
2smoke

2smoke

You may need to adjust the idle screw to open up the slide a little bit. Your probably getting fuel but not enough air. No combustion will happen if your not getting enough air.
 
2smoke

2smoke

Its probably a larger screw. It will likely be on the left hand side of the carb. In the middle of the slide barrel near the bottom of the slide barrel. When you find what Im describing remove it. But besure to count the full 360 degree turns when you remove it. Just incase you pull the wrong one. It will be a tapered type screw but the end will be rounded not pointed. If you pull the pointed on thats your air fuel mixture screw and you will likely get fuel out of the opening once you get it backed out most of the way. If so thats the wrong one. Also your idle screw will likely have a spring on it. Oh and its probably the big one.
 
SRAD97750

SRAD97750

Moderator
Staff member
image-jpg.20432

Not your carb, but gets the point across...
One is idle mix, one is idle speed.
The one in the middle above the letters PE is the Speed Screw.
The one off to the left of the PE is an Idle Mix Screw
-BIG DAN:thumb:
 
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