Re: Pointy fuel/engine issue
 

TPS was calibrated 100% spot on.. changed spark plugs and seeing if this works.. Fingers crossed !!

Re: Pointy fuel/engine issue
 

while changing the plugs check the coil connectors and all pair/airbox hoses plus the bungs on the vacuum points.

Re: Pointy fuel/engine issue
 

coil connectors....? The airbox was securely fastened when i checked

Re: Pointy fuel/engine issue
 

Got to question your findings there, how have you narrowed it down to this? I think you're barking well up the wrong forest.

What restrictor kit is it?


So to question your perception and logic on this score you seem to have attributed all problems to fuel being dumped into the bike or not. There is FAR more to the science of fuel mixtures and running engines than that, and it's pretty hard to tell just by listening.


Here's my two penneth, if you know what fault is... go fix it you don't need to ask us. Fact that you are asking says you don't. Tell symptoms don't try to tell the cause.

You say it stinks of fuel, it is fluctuating at idle and misfiring when you give it some load. I would say most likely it is plug or coil breaking down. Replace the plugs, see if you can swap coils with a mate one cylinder at a time and see if it sorts it.

Re: Pointy fuel/engine issue
 

What he said!

Re: Pointy fuel/engine issue
 

Fair comment... I know what a coil pack is on a car and tried looking for a similar looking thing on the SV but couldn't find anything. Does anyone have a picture or description of what and where I need to look for please?

The problems aren't consistent which is the most irritating thing which is why its taken as many miles as it has to establish this much. ****EDIT... It isn't misfiring on the way up the revs, only on the way down (this seems to have sorted itself out lately and after changing the plugs today it has only done it when i've given it a load of beans going up through the gears then let off in 4th or 5th, just one fart of a backfire then no more)

I will run a few more hundred miles and see what's new with the new plugs.

I don't have any mates with SV's, how much are they second hand or are they the sort of item you don't buy second hand?!

Apologies for being an **** Chris

Re: Pointy fuel/engine issue
 

you have changed the plugs so it would have sorted it straight away.

are you certain that you have taken the nipples off the top of the plugs so there is only a thread showing (if they were present) pushed the plug caps fully home?

the sv plugs are very thin and it's very very easy to crack them due to over tightening them.

did the plugs go all the way in by hand then a nip up with a plug wrench or were they fairly hard to turn by hand and require you to use a plug wrench all or most of the way in?

yes the airbox might be connected but are all the relevant connectors and hoses coming from the airbox connected?

if you trace the thick black wire (HT lead) back from the plug you will find the coils.

if i were you i would get a compression test done.

Re: Pointy fuel/engine issue
 

I've had no issue at all with smell, pops/bangs (although I know these are to be expected a little with aftermarket exhausts), 'cutting out' briefly since changing the plugs but have only done 20 miles.

By nipple you mean the metal protector thing that screws onto the plug? If yes then yes I did

The rear plug went in all the way until needing to be nipped with a socket, the front did a sort of tight loose tight (the white part of the plug was mud coloured hence I feel the need to get myself a fender extender)

If memory serves me correctly there's just one hose from the airbox? It's connected at the airbox end but I dont' know where that leads to or if its connected at the other end. I've checked the inspection bubble and no fluid in there.

Thankyou, I will do this tomorow as well as the other bits I haven't done previous.

What would a compression test show me? (as in if I got a low/high reading?)

Thanks btw !!

Re: Pointy fuel/engine issue
 

compression test will show if there is low compression in one/both of the cylinders this can help narrow down if you have a worn valve or worn bore etc.etc.

have you had your throttle bodies balanced?

Re: Pointy fuel/engine issue
 

Ah okay.. in which case its gonna be big money to fix it right?

I asked my mechanic about it then he had a little fiddle around and said I don't need it.. Should I ask him again?