trx250r fuel and idle issues

[rivera82]

ok, so i took my R out past Saturday and after riding a bit i ran out of fuel, pushed it home and poured close to 2 gallons after riding for about 1 1/2 hrs i ran out of fuel, what can be the cause for that much fuel consumption? or is it normal for the R? my main jet is a 152, my needle is a d177 and slow jet is 40, looks to my like Im lean all around but it runs good, except it does not idle, so were is my fuel going?

I checked my top end and it looks like its time for a rebuild (some scaring on piston), but will needing a top end and low compression (145psi) cause it to burn excessive fuel, not too long ago my son and i rode around 6 hr on a full tank, him on a Blaster and me on a YZ250.

 

[blasterdemon7]

An improperly tuned and/or poor mechanical condition engine will burn much more fuel do to the need to apply much more throttle to attain the desired performance.

 

[rivera82]

That makes sense, ill replace the top end and see how it does

 

[Luni]

145 PSI is actually pretty good IMO.

 

[JonS]

well hey, depending on how far you are and what year it is, you can bring it to my house and then ride off into the sunset with a blaster.




lol

 

[rivera82]

well hey, depending on how far you are and what year it is, you can bring it to my house and then ride off into the sunset with a blaster.




lol

Seams like a good deal.....to you, but i think ill keep this one for several years.

145 PSI is actually pretty good IMO.

Well over at trx250r.net im supposed to have anywhere from 160 to 185 psi

 

[JonS]

Seams like a good deal.....to you, but i think ill keep this one for several years.



Well over at trx250r.net im supposed to have anywhere from 160 to 185 psi

yeah man, i was only kidding. i'd really like to have a TRX 250R.

 

[rivera82]

yeah man, i was only kidding. i'd really like to have a TRX 250R.

Sorry if it came out wrong, sarcasm does not translate well in text, maybe a hahaha at the end? Hahaha

 

[Surfrjag]

gotta be leaking somewhere. shouldnt be using that much fuel. those should have around 175 psi compression.

 

[blasterdemon7]

yeah man, i was only kidding. i'd really like to have a TRX 250R.

Who wouldn't .I:I. .

 

[Luni]

Oh, well those guys would know more about it than I would.

 

[rivera82]

The thing about this forum is that it has bigger support. And most of the guys here know there 2 stroke.

 

[rivera82]

well i found out the issue to my bad compression, i went from 140 psi to 190 psi with a new top end, but I'm still smoking like a chimney and going thru fuel like there's no tomorrow, 2 gallons in 1 1/2 hrs, my slow jet is a 50, it wont idle and the smoke is thick and lingers, compared to my blaster and YZ250 its like 3 times as much, could it be that i need to be really lean im thinking of somewere in the 40 vicinity on the slow jet, what do you guys think?

PS

The top ring broke in 3 parts, i only managed to find 2 could it be that the 3rd one left thru the exhaust?