250r running rich (video) and a couple stills of all 3 bikes

[threewheelin-feelin]

ok as some of you remember i have been haveing a rich condition on my 250r for some time now...i still have not got to pressure check the crank case to check the seals but many of you were comming up with other ideas...so sa video...i cant for the life of me figure out whats wrong with my camera i hope yall can still make it out...and a still of each...this video is taking with a stock pilot jet, 135 main jet and mixture and 32:1 with bel ray synthetic oil video here http://www.youtube.com/watch?v=7Tcbv...eature=mh_lolz

[badass350x]

Seems to run and Idle well, your pre mix is way rich, Air screw, plug gap? Rebuilt the carb?

[threewheelin-feelin]

it runs well with a new plug...but eats plugs some times in a few mins...some times ill get a few hours out of them...i use to be able to ride this bike for months with out changing the plug

[82 250r]

When a bike losses compression it can appear rich.

1st step...compression test to rule it out.

Your bike is having trouble idling down after you rev it up...that is usually a lean condition.

2nd step...leakdown test to rule out a vacuum leak and/or bad seals (also the smoke could be antifreeze or trans oil from a vacuum leak/head gasket)

With automobiles, there is a saying "most carburetor problems are ignition related"
With 2 strokes there should be a saying " Most carburetor problems are compression and vacuum leak related"

Put your carburetor back to the last known good setting, then start with step 1 and 2.

Hope this helps,
Marc

BTW, From what i understand, after you get this problem solved, look for a stock 86 flat slide carb.

[gus]

When you first started it I was like dam that R smokes more then a fog machine lol. Whats your mix ratio?

[gus]

Sorry I just finished ready your thread lol 32:1

[threewheelin-feelin]

they bike makes around 175psi of compression...the carb is set up the way it was the day i bought it 4 years ago...other then i turned to air screw out to try and lean it out...im trying to get a pressure gauge to check the crank case...its the only thing i havent done

[threewheelin-feelin]

When a bike losses compression it can appear rich.

1st step...compression test to rule it out.

Your bike is having trouble idling down after you rev it up...that is usually a lean condition.

2nd step...leakdown test to rule out a vacuum leak and/or bad seals (also the smoke could be antifreeze or trans oil from a vacuum leak/head gasket)

With automobiles, there is a saying "most carburetor problems are ignition related"
With 2 strokes there should be a saying " Most carburetor problems are compression and vacuum leak related"

Put your carburetor back to the last known good setting, then start with step 1 and 2.

Hope this helps,
Marc

BTW, From what i understand, after you get this problem solved, look for a stock 86 flat slide carb.

lean condition? oh man now im really lost

[SteveCZ28]

if your seals and compression check out ok, i would lean hard into getting a 86+ flatside. my r was giving me headaches for the longest time with the stock 85 round slide. it would smoke heavily from the pipe, but then the plug would still show lean. after a year of head aches, i finally tried the flat side and it solved every single problem i was having

also is this a new oil to you? if so read the bottle and see what mixture they reccommend. my bike runs great at 50:1 which is what my oil company reccommends

[badass350x]

So you haven't rebuilt the carb? Put a kit in it and run your mix at 40:1 or 50:1 as stated above!! Oil has came along ways these days and running at 32:1 is rich.. in fact you might be burning all that extra oil in the bottom of the crank case thats excess of your mix!

[threewheelin-feelin]

the carb has has been rebuilt...brand new reeds as well...ive run 32:1 since i got it...this problem just came out of nowhere

[badass350x]

Then I would go with what steveCz28 is referring to on the carb as long as everything else checks out!! Make sure your float is set correctly, I would double check everything again on your rebuilt carb! Other then that I would start leaning towards your electronics as far as spark goes..

[threewheelin-feelin]

Then I would go with what steveCz28 is referring to on the carb as long as everything else checks out!! Make sure your float is set correctly, I would double check everything again on your rebuilt carb! Other then that I would start leaning towards your electronics as far as spark goes..

well i have tryed two different carbs and get 100% identitical results...everything tested within specs accept i couldnt not test the CDI with my tester..it is just frustrating cause i dont have a damn pressure tester for the crank case..im willing to bet money that the seals are leaking

[82 250r]

Your welcome to use my pressure tester if you want to pay shipping. Priority Mail should be about $9 both ways.

It sounds to me like you may have a leak because the bike wont idle down. That might not be your only problem though. Are you losing coolant or gear oil? That may be the cause for the smoke.

BTW...175 compression is on the border for a rebuild.

Marc

[SteveCZ28]

i was in your same situation 'feelin....i had 2 round slides. and couldnt get it figured out for nothing...and couldnt believe that 2 carbs could be junk and cause poor running conditions. so when i got the flat slide and it worked, it just confirmed that both of the round slides were junk....it might be worth a shot....also i would check and make sure the intake boot isnt cracked or torn, and make sure it is bolted good and solid to the cylinder just to make sure it isnt sucking air in there.