Turning over but not firing! Any ideas??
Help!!!
Ive been trying to fire up the GPX 250 Im (STILL!) doing up. Its been sat in our damp garage for about 4/6 weeks. Altho it turns over fine, all that happens is there is a slight puff of smoke/steam from the exhausts and occasionally a HUGE back-fire blasts out of one of the pipes AFTER I stop turning the engine over. Im not sure which tho.
Ive tried with the choke on /off, throttle open/shut and all the various combinations of the above.
The engine is trying to fire but it just wont catch.
Any POLITE surgestions????
Re: Turning over but not firing! Any ideas??
My first look would be the battery, I have had it before where a bike will turn over but not start, even after charging the battery. The voltage drops when trying to start the engine. I would guess the backfire and smoke would be unburnt fuel entering the exhaust, rectified by the bike starting. Try putting a known good battery on the bike to try.
Re: Turning over but not firing! Any ideas??
I must admit I had to top up the battery water recently as it was very low, but I re-charged the battery and it took and held the charge ok.
Any other thoughts?
Re: Turning over but not firing! Any ideas??
Have you got a good spark at the plugs? What do they look like - oily or covered in fuel?
If the fuel has been in the tank for a while then change it as old petrol sucks in condensation.
I don't know this bike - I assume it's got carbs not injection? If it's got carbs and been sitting then the float or needle could be stuck giving erratic fuel delivery and flooding it.
Re: Turning over but not firing! Any ideas??
If your based in or near swindon i'm happy to have a look at it Got a GPX myself :)
Re: Turning over but not firing! Any ideas??
Up date.
I got a set of new plugs from HAYBALLS in Salisbury (as I was working down that way) and she fired up almost straight away!!!!
Turns out 1 plug was cracked and the other was too wet with fuel!
Thats the good news! BAD NEWS, when I took the tank off to get at the plugs (!!!!) I found a pin prick hole in the tank! I was given as a FREEBIE a tube of tank sealant (Like Araldite!) and it seems to be holding JUST! but any better solutions would be gratefully recieved!
Genesis... Thanks for the offer, Im in Calne.
Re: Turning over but not firing! Any ideas??
excellent news...sorta! Are you any good with welding? could weld a small patch over the tank hole?
Re: Turning over but not firing! Any ideas??
I might be way out but I'm sure you can get some stuff that you put inside the tank that acts as a sealer and protects from rust etc.
Re: Turning over but not firing! Any ideas??
Dabs.... welding and petrol tanks, especially used ones always sounds a bit risky to me!!! :o Anyway Ive never welded before! :-/
Genesis.... Is that a bit like the sealant you blow up tyres with? Any idea on names people???
Re: Turning over but not firing! Any ideas??
Try this link;
http://www.frost.co.uk/result_search...FSfxEAodqGoceA
I'm sure Hein Gericke also used to sell a sealant.