Thread: 250cc twin won't start
Results 1 to 10 of 12
|
-
#1 250cc twin won't start
- Join Date
- Apr 2017
- Location
- new zealand
- Posts
- 6
04-10-2017, 09:47 AMHey everyone I have a 250 cc inline twin quad 253fmm-c, it wont start.
I have
cleaned the carb 3 times
fresh fuel
new plugs
checked valve timing and valve clearance, both right
compression test 160 in both cylinders
checked for spark , good spark in both
Does anyone have any ideas, thanks
-
04-10-2017, 10:31 AM
Airfilter?
Sent from my GN8003 using TapatalkSWM RS500R, R1200GS LC
-
#3 Re: 250cc twin won't start04-10-2017, 03:57 PM
A little blast of starter fluid might be helpful to see if you're actually getting a strong enough spark. WD40 works in a pinch.
-
#4 Re: 250cc twin won't start
- Join Date
- Apr 2017
- Location
- new zealand
- Posts
- 6
04-10-2017, 06:39 PMAir filter is clean and I have tried it on and off thanks
-
#5 Re: 250cc twin won't start
- Join Date
- Apr 2017
- Location
- new zealand
- Posts
- 6
04-10-2017, 06:41 PMI haven't tried starter fluid yet but I will give it go, the engine tries to go but won't Rev at all
-
#6 Re: 250cc twin won't start
- Join Date
- Apr 2017
- Location
- new zealand
- Posts
- 6
04-12-2017, 05:48 AMI put the carb through an ultrasonic bath but still no go, im out of ideas other than replacing all the electrics
-
#7 Re: 250cc twin won't start
- Join Date
- Sep 2011
- Location
- Sofia, Bulgaria
- Posts
- 262
04-12-2017, 05:53 AMDid you try playing with the air-fuel mixture screw on the carb? Is the plug wet after you crank it for a while?
-
#8 Re: 250cc twin won't start
- Join Date
- Apr 2017
- Location
- new zealand
- Posts
- 6
04-12-2017, 05:57 AMYes I have mucked around with it, what would you recommend a good starting point 1, 1/4 turns from fully wound in?
-
04-12-2017, 11:50 AM
Any former activity on inlet valves, e.g. adjustment? Maybe nearly no opening?
Was camshaft out? Maybe timing is wrong. Happens easily by just missing one tooth or use the wrong marker on the fly wheel.
I assume its somehow a timing problem.
Sent from my GN8003 using TapatalkSWM RS500R, R1200GS LC
-
04-12-2017, 11:52 AM
Oh, and check the connection between carb and cylinder. When u have air leakage there then u can play on the carb for ages
Sent from my GN8003 using TapatalkSWM RS500R, R1200GS LC
« Previous Thread | Next Thread » |
Similar Threads
-
twin port cg clone head
By badger8v in forum Modifications (Cosmetic and Performance)Replies: 1Last Post: 01-23-2015, 06:25 AM -
Benelli 300 twin
By td_ref in forum Industry News and Moto TalkReplies: 2Last Post: 02-10-2014, 09:54 AM -
cold start / kick start problem
By tylerkaz in forum MaintenanceReplies: 2Last Post: 06-03-2012, 11:05 PM -
Selling my V-Twin 250 - Beijing
By Dani77 in forum Bike Market - ClassifiedsReplies: 0Last Post: 06-26-2011, 08:07 AM -
V-Twin Technicians in China
By Pal in forum AsiaReplies: 0Last Post: 06-05-2011, 03:35 PM