motorcycle electrical connectors

[Chris Jennings]

93 KLR with 45,000 miles Riding down the highway it develops a lurching feeling. It's not a consistant feelng but sporadic. When it does it it does it all teh time but it's not rythmic. Does that make any sense? It seems to be temperature related, I think. When the temp gauge gets a little over halfway it will do it over 4000 RPM or so. If I stop for just a little while and ride again it does not do it for a while but will start doing it again in about 10 minutes. Does not seem to do it on side streets at low speed, but I did not test that very thouroughly. RPM stays steady when it does it and teh engine does not rev. Some things that have recently changed. Chain and sprockets only have about 700 miles on them. chain is at the proper tension and has been confirmed by two other KLR riders. I did put a 14 tooth on and left the rear the stock size. Chain was lubed today. T-mod.I did this last night. I unhooked the hose connecting to the carb and it still did it eventually. L-mod in airbox. It's been a few weeks about 700 miles ago 1 turn out on the pilot screw. It's been a few weeks about 700 miles ago New Cheng Shen tires. I checked the pressure in the rear and it read 45 but this was after about 45 minutes on the highway so the tire was hot. I checked it a couple of days ago and it was 35. Changed the oil last night and the level looks good through the site glass. 2.2 liters I did not change the filter Magnetic drain plug. I opened the gas cap and it still did it. I had a torn diaphragm when I got the bike and this does not feel the same. I am still going to check that though as it's not very hard. Coolant is only about 6 months old and the color is still OK with it resting between full and low as the bike sits on the side stand immediatly after getting off. I did about 600 miles this weekend 500 of that being hwy miles and did not have any problems. With the 14 though I was running 5500-6000 most of the way. Any ideas? Thanks for the help, I have a big trip planned stating Friday. [Non-text portions of this message have been removed]

[J Fortner]

What does the air filter look like? Any chance the air filter is over oiled? Sounds like a lean condition? What does the temp gauge look like when it does this?

On 3/1/06, Chris Jennings wrote: > > 93 KLR with 45,000 miles > > Riding down the highway it develops a lurching feeling. It's not a > consistant feelng but sporadic. > > > [Non-text portions of this message have been removed]

[Andrew Tuning]

Turn the pilot screw back in about 1/2 a turn. I think you will find it is running rich (as if it is choked all the time) which will also give you the same symptoms as a dirty air filter. To accurately set the mixture of the carb, you need to take it to a tune-up type shop that has an exhaust gas analyzer or you need to be adjusting by ear while the engine is running but this takes some training. (I do it quite often on carbs) -Andy BIFBR Andyt59@... http://myweb.cableone.net/tbernard -----Original Message----- From: DSN_KLR650@yahoogroups.com [mailto:DSN_KLR650@yahoogroups.com] On Behalf Of J Fortner Sent: Wednesday, March 01, 2006 3:43 PM To: Chris Jennings Cc: DSN_KLR650 Subject: Re: [DSN_KLR650] HELP....lurching What does the air filter look like? Any chance the air filter is over oiled? Sounds like a lean condition? What does the temp gauge look like when it does this?

On 3/1/06, Chris Jennings wrote: > > 93 KLR with 45,000 miles > > Riding down the highway it develops a lurching feeling. It's not a > consistant feelng but sporadic. > > > [Non-text portions of this message have been removed] Archive Quicksearch at: http://www.angelfire.com/ut/moab/klr650_data_search.html List sponsored by Dual Sport News at: www.dualsportnews.com List FAQ courtesy of Chris Krok at: www.bigcee.com/klr650faq.html Member Map at: http://www.frappr.com/dsnklr650 Yahoo! Groups Links

[Chris Jennings]

I was going to look at both of those tonight. Temp gauge is just a hair over half to 3/4 at times. It seems to be running a little hot but it hit the low 80's today for the first time in some time. The fan does come on. I rode about 100 miles of dirt over the weekend but it was wet packed dirt so there was very little dust. However having just done the L-mod to the airbox I don't really know how that will affect the air filter. It has a K&N filter that has been in there since I bought the bike and it was cleaned and oiled with K&N filter oil about 4 weeks ago before I cut the airbox. I'm going to turn the screw back in 1/2 turn and clean the air filter again. Since I've ridden about 700 miles is there anything I can do if it has been running to rich to correct any problems? Would an additive in the gas help any? As I think about it the plastic by the exhaust has turned a blacker color than usual. It was always kind of tinted light brown, but I did notice today that it was quite a bit darker. This and the running a little hot symptom leads me to think the running rich theory may be it. Another thing. A few months ago I tagged a car with the radiator side of the bike. The radiator has a slight dent in it but it's not that bad and there are no leaks of any kind.

On 3/1/06, Andrew Tuning wrote: > > Turn the pilot screw back in about 1/2 a turn. I think you will find it is > running rich (as if it is choked all the time) which will also give you > the > same symptoms as a dirty air filter. To accurately set the mixture of the > carb, you need to take it to a tune-up type shop that has an exhaust gas > analyzer or you need to be adjusting by ear while the engine is running > but > this takes some training. (I do it quite often on carbs) > > -Andy > BIFBR > Andyt59@... > http://myweb.cableone.net/tbernard > > -----Original Message----- > From: DSN_KLR650@yahoogroups.com [mailto:DSN_KLR650@yahoogroups.com] On > Behalf Of J Fortner > Sent: Wednesday, March 01, 2006 3:43 PM > To: Chris Jennings > Cc: DSN_KLR650 > Subject: Re: [DSN_KLR650] HELP....lurching > > What does the air filter look like? Any chance the air filter is over > oiled? > Sounds like a lean condition? What does the temp gauge look like when it > does this? > > On 3/1/06, Chris Jennings wrote: > > > > 93 KLR with 45,000 miles > > > > Riding down the highway it develops a lurching feeling. It's not a > > consistant feelng but sporadic. > > > > > > > > > [Non-text portions of this message have been removed] > > > > Archive Quicksearch at: > http://www.angelfire.com/ut/moab/klr650_data_search.html > List sponsored by Dual Sport News at: www.dualsportnews.com > List FAQ courtesy of Chris Krok at: www.bigcee.com/klr650faq.html > Member Map at: http://www.frappr.com/dsnklr650 > Yahoo! Groups Links > > > > > > > > > Archive Quicksearch at: > http://www.angelfire.com/ut/moab/klr650_data_search.html > List sponsored by Dual Sport News at: www.dualsportnews.com > List FAQ courtesy of Chris Krok at: www.bigcee.com/klr650faq.html > Member Map at: http://www.frappr.com/dsnklr650 > Yahoo! Groups Links > > > > > > > [Non-text portions of this message have been removed]

[Blake Sobiloff]

On 3/1/06, Chris Jennings wrote:

> I'm going to turn the screw back in 1/2 turn and clean the air filter again.

Most folks turn these screws out 2.5 turns from fully seated. Regardless, this only affects the bike at idle and should not produce the symptoms you're seeing at 4K RPM.

> This and the running a little hot > symptom leads me to think the running rich theory may be it.

Motors run hot when running lean. Running rich leads to running cooler. Turning the pilot screw out from the factory setting enrichens the mixture and helps the bike stay cooler when idling. -- Blake Sobiloff http://sobiloff.typepad.com/> San Jose, CA (USA)

[Andrew Tuning]

...But the rule of thumb is to turn ANY mixture control screw out 1.5 turns from seated for the initial adjustment then start the motor and adjust from there. This is where a good ear comes into play. -Andy -----Original Message----- From: DSN_KLR650@yahoogroups.com [mailto:DSN_KLR650@yahoogroups.com] On Behalf Of Blake Sobiloff Sent: Wednesday, March 01, 2006 4:24 PM Cc: DSN_KLR650@yahoogroups. com Subject: Re: [DSN_KLR650] HELP....lurching

On 3/1/06, Chris Jennings wrote: > I'm going to turn the screw back in 1/2 turn and clean the air filter again. Most folks turn these screws out 2.5 turns from fully seated. Regardless, this only affects the bike at idle and should not produce the symptoms you're seeing at 4K RPM. > This and the running a little hot > symptom leads me to think the running rich theory may be it. Motors run hot when running lean. Running rich leads to running cooler. Turning the pilot screw out from the factory setting enrichens the mixture and helps the bike stay cooler when idling. -- Blake Sobiloff http://sobiloff.typepad.com/> San Jose, CA (USA) Archive Quicksearch at: http://www.angelfire.com/ut/moab/klr650_data_search.html List sponsored by Dual Sport News at: www.dualsportnews.com List FAQ courtesy of Chris Krok at: www.bigcee.com/klr650faq.html Member Map at: http://www.frappr.com/dsnklr650 Yahoo! Groups Links

[Tony JONES]

> From: "Blake Sobiloff" > Subject: Re: HELP....lurching > > On 3/1/06, Chris Jennings wrote: > > I'm going to turn the screw back in 1/2 turn and clean the air filter again > . > > Most folks turn these screws out 2.5 turns from fully seated. > Regardless, this only affects the bike at idle and should not produce > the symptoms you're seeing at 4K RPM.

Or 1.75 turns out and shim the needle. At least thats the alternative I've heard and it should richen it across a broader rpm range. I've heard 0.5mm to 1mm as the recommended washer size. I missed the earlier part of the problem description but it sounds like fuel delivery (diaghragm, slide or sticking float, maybe petcock?) rather than ignition related. God this all brings back bad memories. Tony

[Chris Jennings]

I'm going to look at the diaphragm/slide. There was a point this past weekdn where I went up and over a steep hill pretty fast. when I landed the bike sputtered and had no power. then there was a quiet pop and all was normal. The other riders with me thought that it was the slide in the carb sticking maybe because of the gravity ??? Can you lube the slide?

On 3/1/06, Tony Jones wrote: > > > > From: "Blake Sobiloff" > > Subject: Re: HELP....lurching > > > > On 3/1/06, Chris Jennings wrote: > > > I'm going to turn the screw back in 1/2 turn and clean the air filter > again > > . > > > > Most folks turn these screws out 2.5 turns from fully seated. > > Regardless, this only affects the bike at idle and should not produce > > the symptoms you're seeing at 4K RPM. > > Or 1.75 turns out and shim the needle. At least thats the alternative I've > heard and it should richen it across a broader rpm range. I've heard > 0.5mm to 1mm as the recommended washer size. > > I missed the earlier part of the problem description but it sounds like > fuel > delivery (diaghragm, slide or sticking float, maybe petcock?) rather than > ignition related. God this all brings back bad memories. > > Tony > > > Archive Quicksearch at: > http://www.angelfire.com/ut/moab/klr650_data_search.html > List sponsored by Dual Sport News at: www.dualsportnews.com > List FAQ courtesy of Chris Krok at: www.bigcee.com/klr650faq.html > Member Map at: http://www.frappr.com/dsnklr650 > Yahoo! Groups Links > > > > > > > > [Non-text portions of this message have been removed]

[Chris Jennings]

Diaphragm is good, No holes, tears or pin pricks. Checked against bright light. After all it came from a Harley shop so it must be built to last forever.

On 3/1/06, Chris Jennings wrote: > > I'm going to look at the diaphragm/slide. There was a point this past > weekdn where I went up and over a steep hill pretty fast. when I landed the > bike sputtered and had no power. then there was a quiet pop and all was > normal. The other riders with me thought that it was the slide in the carb > sticking maybe because of the gravity ??? > > Can you lube the slide? > > > On 3/1/06, Tony Jones wrote: > > > > > > > From: "Blake Sobiloff" > > > Subject: Re: HELP....lurching > > > > > > On 3/1/06, Chris Jennings < oldbmw@...> wrote: > > > > I'm going to turn the screw back in 1/2 turn and clean the air > > filter again > > > . > > > > > > Most folks turn these screws out 2.5 turns from fully seated. > > > Regardless, this only affects the bike at idle and should not produce > > > the symptoms you're seeing at 4K RPM. > > > > Or 1.75 turns out and shim the needle. At least thats the alternative > > I've > > heard and it should richen it across a broader rpm range. I've heard > > 0.5mm to 1mm as the recommended washer size. > > > > I missed the earlier part of the problem description but it sounds like > > fuel > > delivery (diaghragm, slide or sticking float, maybe petcock?) rather > > than > > ignition related. God this all brings back bad memories. > > > > Tony > > > > > > Archive Quicksearch at: > > http://www.angelfire.com/ut/moab/klr650_data_search.html > > List sponsored by Dual Sport News at: www.dualsportnews.com > > List FAQ courtesy of Chris Krok at: www.bigcee.com/klr650faq.html > > Member Map at: http://www.frappr.com/dsnklr650 > > Yahoo! Groups Links > > > > > > > > > > > > > > > > > [Non-text portions of this message have been removed]

[Chris Jennings]

Update Cleaned the air filter, was a little dirty but you could still see the bottom of the bowl through the water so it was not to bad. Turned the screw back in to where it was. Drained the carb. There was a little gunk in the hose, I 'm pretty sure it came from the carb and was not inside teh hose. When I pulled the top off the carb the diaphragm was a little twisted, not sure if I pulled it off when I took the carb top off or not. I suspect it was a little off and was contributing to my problem. Will ride tomorrow and let ya'll know

On 3/1/06, Andrus Chesley wrote: > > This is probably a thing with slide / vaccumm Carbs. The impact of > landing overrides the held posisitioning of the Vaccumm controlled > slid to a point, then it closes off a bit due to gravity and impact > reaction and just shuts down the fuel/air supply to the engine for a bit. > > Well, that sounds good in theory. Years ago I use to do some jumps on > my first KLR ( '92 ) and would have that problem. I played with a 38 > mm round slide Mikuni and that problem went away. LOL Gas comsumption > was out a sight then. > > Now , 12 years or so later, I just run them stock and much slower. > But, longer. > > Andy in Jennings, LA. > > > > > [Non-text portions of this message have been removed]