[Tonner]

Having a few issues with my sons Coily, if it sits for a week or so it wont start. Cranks over fine just no go. Today I dumped a bit of juice down the carby after trying to get it to fire for 30 or 40 seconds of intermittent cranking and it fired straight up then died. Dumped a bit more down and it ran coughed a bit and then idled. Once its been running and warms up its fine for the rest of the day. Its just the initial start after sitting for a few days. The fuel pump is near new, well according to the guy I bought the vehicle from, it does look newish and in the spares he gave me was an old fuel pump so Im guessing he changed it. To me it appears to have the fuel draining back to the tank, is there some sort of non return valve in the fuel line or the carb? It has the standard Suzuki carb fitted and is the standard 1.3 motor.

Appreciate any assistance.

[want33s]

There is no non-return valve.
I'd replace the fuel pump and check that the fuel cap is vented.

[tonyevans]

Also the Fuel filter I would suggest.

[Tonner]

tonyevans wrote:

Also the Fuel filter I would suggest.

Will throw in a new fuel filter in and see what happens.

[Tonner]

want33s wrote:

There is no non-return valve.
I'd replace the fuel pump and check that the fuel cap is vented.

If the fuel pump was dodgy wouldn't it get worse after it started? Is there a way to test them? I have had the fuel line off and cranked it over and it shoots fuel at least 1 meter + like I said it not that old and Im reluctant to put a $130 pump on it if it doesn't require it. The cap is an easy try but again I would think that would get worse the longer it ran.
Im still leaning towards the carb having an issue, there must be some sort of non return valve setup in it.......maybe the fuel Cutoff solenoid is dodgy?

Anyone else have any ideas

[tonyevans]

If the car sits a while (more so when the weather is hot) the petrol will evaporate in the carby - If the fuel filter is clogged it will cause a vacuum and make it hard for the pump to get fuel up to the carby - when you pour fuel down and it fires the pump works much harder and can get petrol up.

I also had a pump problem one a 1.3lt and just took the mechanical pump off and replaced it with a electric pump and its great.

[Tonner]

Ill try the filter later, worst bit is waiting a week once you have tried something !!!!

[HarryHoudini]

My Coily is the same,very hard to start once it sits for a week or 2 but when driven daily starts first time every morning.

[want33s]

Tonner wrote:

want33s wrote:

There is no non-return valve.
I'd replace the fuel pump and check that the fuel cap is vented.

If the fuel pump was dodgy wouldn't it get worse after it started? Is there a way to test them? I have had the fuel line off and cranked it over and it shoots fuel at least 1 meter + like I said it not that old and Im reluctant to put a $130 pump on it if it doesn't require it. The cap is an easy try but again I would think that would get worse the longer it ran.
Im still leaning towards the carb having an issue, there must be some sort of non return valve setup in it.......maybe the fuel Cutoff solenoid is dodgy?

Anyone else have any ideas

There is no non-return valve but one of the two valves in the fuel pump could be letting fuel drain back over the week it sits.
$130 for a pump? Is that genuine Suzuki?

[Tonner]

Think I might fit a non-return valve in the fuel line and a new fuel filter and see what happens. Non genuine on gaybay

[Tonner]

HarryHoudini wrote:

My Coily is the same,very hard to start once it sits for a week or 2 but when driven daily starts first time every morning.

That's it in a nutshell, bloody annoying for sure especially with the little battery they have in them.

[tonyevans]

Here - $23 delivered - Problem solved - Unless it is the Filtor.

http://www.ebay.com.au/itm/Electric-Fue ... 1c493e254e

[Tonner]

tonyevans wrote:

Here - $23 delivered - Problem solved - Unless it is the Filtor.

http://www.ebay.com.au/itm/Electric-Fue ... 1c493e254e

thanks already ordered one....lol

[damagera]

know its not the same but i had a GSX1100 that would start first try every time if started every day .. but when left for a while was a bugger to start,,, turned out the fuel was shitty and was water in the carbys..took ages to find out that

[christover1]

tonyevans wrote:

Here - $23 delivered - Problem solved - Unless it is the Filtor.

http://www.ebay.com.au/itm/Electric-Fue ... 1c493e254e

Put one like this on my Moke, (got sick of changing hard to get at fuel pumps) and never had a problem again.