Vintage Dirt Bike Q & A • View topic

View unanswered posts | View active topics

Board index » Questions & Answers » Honda CR, MR & MT

All times are UTC - 7 hours [ DST ]

MT250 PREMIX RATIO

Page 1 of 1

[ 2 posts ]

Print view

Previous topic | Next topic

Author

Message

marc.uk

Post subject: MT250 PREMIX RATIO

Posted: Sun May 31, 2009 11:16 am

Joined: Tue Jan 01, 2008 1:03 pm
Posts: 7

Hi, I would like to known what petrol/oil ratio people are using in mt250s, I am currantly using 40:1 the bike runs fine but the spark plug is getting oiled up and if left on tick over will stall, I might try 50:1 to see if it improves. I have checked the float hight which is ok, any ideas???
thanks marc.

Top

rayivers

Post subject: Re: MT250 PREMIX RATIO

Posted: Sun May 31, 2009 11:38 am

Joined: Sun Nov 30, 2008 12:10 pm
Posts: 1010
Location: Connecticut, USA

Marc,

I assume you've disconnected the oil injection system? If so, I wouldn't go any lower than 40:1, as I doubt that's your problem.

I'll bet your exhaust pipe is clogged, specifically the spark arrestor ahead of the removable tailpipe baffle. The ring of outlets can be cleaned with pipe cleaners and the center drilled out (my apologies to all for posting this for like the gazillionth time

). There may also be substantial carbon buildup in the head tube and exhaust manifold.

Ray

_________________
'74 CR125M (175cc), '75 MR175, '82 RM250Z, '08 YZ250F, '14 Zero FX electric, '14 Zero MX electric, '18 Alta MXR electric

Top

Page 1 of 1

[ 2 posts ]

Board index » Questions & Answers » Honda CR, MR & MT

All times are UTC - 7 hours [ DST ]

Who is online

Users browsing this forum: Bing [Bot] and 30 guests

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum