fun_on_the_sand Posted March 4, 2005 Report Posted March 4, 2005 The only thing left is the iddle screws they may be too closed, also check the carbs' sync. Quote
DerekT Posted March 4, 2005 Author Report Posted March 4, 2005 The only thing left is the iddle screws they may be too closed, also check the carbs' sync. 333276[/snapback] I did check the sync and it was spot on. I will go out 2.5 on the air screw and see if that helps. I did however have it rev at 3-4000 RPM (and higher) which would have taken it out of the pilot jet/ air screw range. I hate the thought of taking it to the dealer..... Quote
KoooPSD Posted March 4, 2005 Report Posted March 4, 2005 Shit i woulda threw the rag in long ago....dont you have a local shop instead of paying dealer fees? Quote
superdave Posted March 4, 2005 Report Posted March 4, 2005 Did you check to see if the floats are set correctly?.....tap on the bowls of the carbs and make sure they are not stuck..Did you take out the reed blocks and made sure the reeds are sitting flat...? also inspect the manifolds for cracks and proper fit...if you are geting more air then needed then starting will be hard...Keep posting.......someone will figure it out...D. Quote
DerekT Posted March 4, 2005 Author Report Posted March 4, 2005 I checked the float height at 21 mm. Both ok. I just checked the flow at the fuel petcock and it flowed 500cc's of fuel or approx. 15 oz. in 30 sec. At the float bowl drains, both flowed freely but took 1.5 mins to flow 500 cc's I think this is enough fuel supply. I did not check the reeds when I had the carbs off but I will next time which looks like it will be soon. Again I rode this for at least 2 hours and once warm ran strong and started 1st kick. My original problem was just cold starting. But now it wont keep running when it does start on a push start. I am thinking of going back to the original needles and 190 mains , get it running and jet from there. Just ned more time to play with it before the poker run on sunday. Any more thoughts? Thanks again Quote
superdave Posted March 5, 2005 Report Posted March 5, 2005 I think that starting over is a great idea....Running is good..Check and re-check the jets to make sure they are clean. Also check the reeds when you have it apart...If you start over with the way it was at first and it does the same thing then I would think that it is the pilots.., but it should still start, but run rough...D Quote
sheeweet Posted March 5, 2005 Report Posted March 5, 2005 Slides and needles have free movement? Slides balanced? Are the plugs BR8ES? Funny, it seems to have all of the conditions needed, as you described them, to fire right off. So this is a used 98 that you just bought! Has it ever fired up cold since you took possession? You have spark, fuel in bowls, plugs are wet...eh, is the filter clean? I don't know, seems like your getting fuel and spark so maybe not sucking enough air. Possible airleak maybe? That still doesn't make complete sense for this symtom though. Can you describe how it ran when you first ever started/rode it cold and otherwise? Quote
DerekT Posted March 5, 2005 Author Report Posted March 5, 2005 Slides and needles have free movement? Slides balanced? Are the plugs BR8ES?Funny, it seems to have all of the conditions needed, as you described them, to fire right off. So this is a used 98 that you just bought! Has it ever fired up cold since you took possession? You have spark, fuel in bowls, plugs are wet...eh, is the filter clean? I don't know, seems like your getting fuel and spark so maybe not sucking enough air. Possible airleak maybe? That still doesn't make complete sense for this symtom though. Can you describe how it ran when you first ever started/rode it cold and otherwise? 333762[/snapback] Yes slides and needles have free movment. As a side note the dynojet needles are approx 5mm longer than the ones I pulled out. I called dynojet and they said if they are 58.9mm long they are the right ones. (they are) Again I just bought this and as it had FMF pipes and K&N I would assume that the previous owner rejetted. (I bought it from a dealer so I don't know the original owner) Yes slides balanced, Yes fresh BR8ES. When I looked at it the 1st time it fired up first kick.Then I brought it home and it started 1st or2nd kick. Went out to ride it and it did not start so I push started it and once it was warm it ran great with no lean or rich conditions noticable (I have been riding and working on bikes for over 30 years) I could shut it off and start it 1st kick every time. Brought it home and It was hard to start cold again. Went riding a second time and it started up cold but it ran rough untill it warmed up then ran great as always untill it eventualy would not idle without my hand on the throttle. Disconected the TORS switch on the thumb throttle and she ran great for the rest of the day. Next day cold, and did not start. That is when I ripped into the carbs to see what jetting I had, Put 270 mains in, Dynojet needles, cleaned everything and no starty. Push started it and it ran but seemed like it was running out of fuel,ie reved high then bogged then just before it died would rev up again,ran like this for 45 sec then died. This went on 2 more times and thats where I am at now. I think I will go back to the jetting I had , get it running then jet from there. This is gettig personal... Quote
JKJK Posted March 5, 2005 Report Posted March 5, 2005 Is the ballance tube between the two cards missing?Is the bowl with the brass tube on the carb with the choke?+are the cut outs on the slides faceing the filters?The symtoms sound like a definite air leak somewhere.I'm sure with all the wisdom here we can help you figure it out.Just keep us informed with the progress+we'll help you out the best we can. Quote
. Posted March 5, 2005 Report Posted March 5, 2005 Is the bowl with the brass tube on the carb with the choke?+are the cut outs on the slides faceing the filters? 333881[/snapback] another thought is the choke leaking at all? Go get some ether or carb cleaner and spray around the engine and see if it revs (after you get the thing running that is) The gas old? You said its a 25 pilot in there so I assume you pulled the pilot out. Every tiny little hole clear on that pilot? You clean the carbs and then the tank causing debris to reflow into the carbs maybe? It's definitely getting enough fuel with your floats because it's flowing out of the overflows, and if the floats were set wrong, it would just suck the bowls dry on top end. Did you disconnect the tors box (little black box in front of petcock)? To you other guys, when you disconnect the throttle sensor for the tors, dont you have to complete the circuit to get it to run right? Quote
DerekT Posted March 5, 2005 Author Report Posted March 5, 2005 another thought is the choke leaking at all? Go get some ether or carb cleaner and spray around the engine and see if it revs (after you get the thing running that is) The gas old? You said its a 25 pilot in there so I assume you pulled the pilot out. Every tiny little hole clear on that pilot? You clean the carbs and then the tank causing debris to reflow into the carbs maybe? It's definitely getting enough fuel with your floats because it's flowing out of the overflows, and if the floats were set wrong, it would just suck the bowls dry on top end. Did you disconnect the tors box (little black box in front of petcock)? To you other guys, when you disconnect the throttle sensor for the tors, dont you have to complete the circuit to get it to run right? 333890[/snapback] Yes to basicly everything with the exception to the possible swapped flooat bowls. I'm gonin in.. Quote
DerekT Posted March 5, 2005 Author Report Posted March 5, 2005 Well I thought I would give her one more push start. Got it running and ran the crap out of her. Once warm i could play with the air screws. Had to put them in to 1/2 out to get it to idle. Now she runs realy strong with the new 270s and dynojet needles. Idles and starts 1st kick. Ilet her cool off for 1-2 hrs and while still a little warm she started up but took a bit to keep it running like the choke not working. JKJK you mentioned That the brass tube should be in the float bowl with the choke in it. I cleaned the carbs one at a time and did not check that. Does only one bowl have this brass tube? If so that could be it. I have ordered new 27.5 pilots and when I put them in I will check.I think the other problem was the leaky fuel petcock leaking fuel into the Cyl and crank and loading it up.Thanks for all the help so far and let me know about the brass tube in the float bowl Quote
JKJK Posted March 6, 2005 Report Posted March 6, 2005 Yes only one bowl has the tube.i'm allmost possitive the one with it goes on the carb with the choke.(maybe somebody can clarify that)If it's reversed the choke will not work correctly.Like what you described.Check the bowls first,then if that is'nt it. Try some 280's if you have some.Sounds like your real close on the jetting. Quote
sheeweet Posted March 6, 2005 Report Posted March 6, 2005 Yah, being that it does better with the air screw 1/2 out it is good that your getting a bigger pilot jet. It's starting sound more like a minor detail being overlooked, but I guess nothing is minor when tuning, eh? Look the choke over thoroughly again and also maybe that tube is absent afterall. Maybe the carbs are on the wrong side with each other, is that possible to do that? Hmmm, should be I think, well tube should be in the left carb. Quote
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.