starting and running problems rvf400

tinter · Two Stroke Sniffer Joined: 21 Sep 2005 Karma :

hello im a new member and am in need of advise.

I own a L reg rvf400 and am having a few problems, currently it wont start the bike turns over as normal but every now and again its back firing loud pop followed by blue flame . When we remove the plugs there coverd in black stuff that looks like oil but not as thick and once cleaned just comes back after each crank it all started last night with a slight hesitation when opening up the throttle followed by poor runnning and now this morning it wont fire

The bike is covered by warrentee but id like to have a few ideas to go at the sales place before i try and get it to him thanks in advance for any information

craigs23 · Mr Muscle Joined: 08 Jun 2005 Karma :

Have you got an aftermarket jets/exhaust installed? What condition is the air filter in?

tinter · Two Stroke Sniffer Joined: 21 Sep 2005 Karma :

its got a hobbsport can, i think it has std jet and the filter was damp with oil a few days ago but weve cleaned it and re oiled it and put it back but its not ran since.

craigs23 · Mr Muscle Joined: 08 Jun 2005 Karma :

Hope it's not, and I might be jumping the gun here, but if the plug is excessively oily it might be the piston rings - is it the same on all four plugs? Try a compression test when you have them out. Is the end of the exhaust dry? What colour is the smoke?

tinter · Two Stroke Sniffer Joined: 21 Sep 2005 Karma :

its exactly the same on all 4 plugs the oil in the engine looks fine and the exhausts dry the smoke from the exhaust is just white normalish not blue

After speaking to the garage it came from, they have suggested new plugs and that the dirty plugs are due to un burnt fuel not oil caused by faulty plug, Iv just collect the new plugs and im going to remove the ones that are there and leave them out for a while then fit my new ones does this sound right or am i waisting my time?

tinter · Two Stroke Sniffer Joined: 21 Sep 2005 Karma :

I have just changed the plugs and with some coaxing its started ran abit smokey but eventually it cleared but now it just boggs when you rev it hard.

Now thinking back to just before the problem started, i had just fuelled up on a wet day just after washing it while the pumps were being refilled im now thinking about contaminated petrol and i want to empty my tank to refuel how and where do you dump petrol properly, as i dont fancy blowing my neighbough hood up

tinter · Two Stroke Sniffer Joined: 21 Sep 2005 Karma :

Problem solved due to poor petrol in the tank it had little worm looking things floating around init so iv cleaned it all out and now its all better