pauldoubleyou Posted February 1, 2019 Share Posted February 1, 2019 So I’ve just spent the best part of two hours trying to get a farmer mates quad to run. I got pinged as ‘that car bloke’ so went up with tools. I’m not hot on carbs but it’s essentially a single cylinder 400cc bike engine on an arctic fox atv. Every carb I’ve had on a bike I’ve just replaced it. It has spark, tested by pulling the plug and sitting it on the casing It has fuel .. the plug is wet and smells of fuel when you pull it. Pulled the carb off and the reservoir was full and seems to be feeding a little too much fuel if anything. Good battery, turns over nice and fast It has air, new air filter. Killswitch not engaged. Seems to have some kind of electric needle fed type idle system, but still doesn’t start with WOT No obvious choke Am I missing something stupid here or could we be looking at timing? It ran, it was minus 7, next day it didn’t run. Air cooled with an oil cooler, relatively new quad, nothing visually fucked. Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
Asimo Posted February 1, 2019 Share Posted February 1, 2019 Remove plug and check for compression. If compression is normal, cook sparking plug with blowlamp or gas ring and shove it in quick then try to start immediately. alf892 1 Link to comment Share on other sites More sharing options...
DodgeRover Posted February 1, 2019 Share Posted February 1, 2019 I would guess gassed up, get the plug red hot and try it Link to comment Share on other sites More sharing options...
pauldoubleyou Posted February 1, 2019 Author Share Posted February 1, 2019 It blows shit out of the plughole when you turn it over if that counts I’ll dig out the tester for tomorrow Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
pauldoubleyou Posted February 1, 2019 Author Share Posted February 1, 2019 What does a hot plug do? Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
DodgeRover Posted February 1, 2019 Share Posted February 1, 2019 If it's blowing fuel out the plug hole it's definitely gassed up.Leave the plug out over night to give it a chance to dry out. With the plug really hot it has a better chance of firing before getting soaked again. Possibly the choke isn't working well enough to start in the coldest temperatures? Link to comment Share on other sites More sharing options...
Rocket88 Posted February 1, 2019 Share Posted February 1, 2019 If it's manual, try tow starting it..........or a quick squirt of sniff after heating the plugs. Link to comment Share on other sites More sharing options...
pilninggas Posted February 1, 2019 Share Posted February 1, 2019 Are you sure the 'electric needle' isnt a choke solenoid? pauldoubleyou 1 Link to comment Share on other sites More sharing options...
castros_bro Posted February 1, 2019 Share Posted February 1, 2019 Remove plug n take off air filter from carb then whizz engine over wiv throttle wide open for 20+ sec. Replace plug n HT, squert Ezaystart (other hallucinations available just send cash) in venturi and finger the appropriate Link to comment Share on other sites More sharing options...
busmansholiday Posted February 1, 2019 Share Posted February 1, 2019 Try a new plug, amazing what a difference that can make on a bike engine, not that I've fucked about for hours trying to get a Honda started in the past..... pauldoubleyou and Barry Cade 2 Link to comment Share on other sites More sharing options...
pauldoubleyou Posted February 4, 2019 Author Share Posted February 4, 2019 Right so thanks to the above, I managed to get it running.. for a bit. Hot spark plug worked. Now again it won’t start after that initial run. So can we say it’s a carb issue that it’s flooding? Offending shite Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
Rocket88 Posted February 4, 2019 Share Posted February 4, 2019 Have you tried a new plug? Link to comment Share on other sites More sharing options...
John F Posted February 4, 2019 Share Posted February 4, 2019 Deffo try a new plug before playing with the carburettor. Also check the HT lead & coil to make sure you've got a nice fat spark. Link to comment Share on other sites More sharing options...
pauldoubleyou Posted February 4, 2019 Author Share Posted February 4, 2019 I tried it a few more times and it seems to run fine. Could be as it’s now hot but I’ll see. Seems to be running like shit as I think someone’s been playing with the idle screw Gonna go back to it tomorrow once it’s stone cold. If it starts then sorted, if not I’ll swap the plug Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
Rocket88 Posted February 4, 2019 Share Posted February 4, 2019 For the price of one plug, I'd stick one in anyway........ pauldoubleyou 1 Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now