It lives... kind of.

knocker · Nova Slayer Joined: 31 Jul 2008 Karma :

Got my divvy 600 engine all back together yesterday and after a bit of hesitation it started but was a bit on the rough side and sounded to be dropping a cylinder or two at idle. Took the carbs off again to give them a clean and set pilot screw as per haynes.

Put everything back together and despite the throttle being totally closed it shoots straight up to 7000rpm and will not come down any lower.

I've checked the choke is off and the throttle is totally closed. I'm at a bit of a loss with this one as i've never seen this before.

Anyone got any bright ideas?

steo · Nova Slayer Joined: 08 Jun 2009 Karma :

Sorry but I have to ask the obvious, did you insert the throttle valves & needle jets in the right way? Can you put your finger into the backs of the carbs & pull the valves up & then let them slide back into the normal position? Have you tried balancing the carbs?

saikouslx · Renault 5 Driver Joined: 06 Apr 2008 Karma :

this happened to me once when i put a new carb in. turns out that the throtttle cable wasbeing pulled to much so the slide was half open rather than fully down with a small gap.

knocker · Nova Slayer Joined: 31 Jul 2008 Karma :

Got it sorted not long after i posted the thread. All down to my stupidity (I blame the heat Smile

)

Whilst tightenting the clips on the carb rubber manifolds i'd managed to slide one around the carb and the back of the screw was stopping the carbs closing properly.

I'd not thought anything about it at the time and so totally forgot i'd done it and as the throttle cable appeared slack i'd presumed the throttle was as closed as it could get, wasn't until i lifted a slider up that I noticed the butterfly was about a third of the way open.

Everything is all sorted and back together and wouldn't you know it it's pissing it down.

I can guarantee that had i got it going last week the heatwave we've just had would not have happened Smile

M1ke · Ped Boi Joined: 11 Jun 2002 Karma :

So, do you wish you never bothered changing the perfectly functioning old plugs?

knocker · Nova Slayer Joined: 31 Jul 2008 Karma :

Old plugs were on their way out anyway. One was only working intermittently so I swapped it for a new one and then thought I may as well do the other three.

Hindsight is a wonderful thing and had i known the trouble I would have then i would have left them in but you live and you learn.

Job would have been much much much simpler had some previous owner not glued the head onto the studs. I originally planned for it to be 2 or 3 days maximum, infact I didn't even bother doing much wiht it for the first day and a half of my week off as I expected it to be fairly straightforward

You live and you learn Smile