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Old 13 October 2005, 09:28   #1
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Suzuki probs

Hi all.

Having a problem with my 1998 Suzuki 200HP EFI. 2-stroke, as those on the Solent Cruise a couple of weeks ago will know. Itís been fine every time until then.

It starts first turn of the key every time from Cold, and ticks over like a watch.
Then when its warm, the tick over sometimes gets a bit lumpy, and if stopped is sometimes difficult to start again. When itís running at anything above tick-over, its fine.

On the cruise we went over the loom several times to find any loose connections, and it suddenly started and ran sweetly, then also started fine later in the day after lunch, and after stopping for fuel. Whilst searching for the fault there was no spark at the plugs, but fuel was getting through, so Iím presuming its electrical.

Iíve been over the loom, cleaned up all the connectors but didnít really find anything wrong.
If it had some form of choke mechanism Iíd blame that, but of course itís all done by the EFI. I will however remove the temperature sender from the block to check for corrosion in the thread before using it again, as an old injected motorcycle of mine was very sensitive to that.

Before I go out again for testing and get stuck, does anyone know of any electrical items that are particularly sensitive to heat/weak generally on these engines, or does anyone have any ideas about anything not covered above.

Ta

Nasher.
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Old 13 October 2005, 16:58   #2
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Hi Simon

Bad news on the engine. The hardest faults to find are the intermittant ones...

Without delving in too far, I would imagine there is a modular sealed CDI type ignition block. If there is no spark then this would be the most obvious place to start. It may mean replacing the whole module though.. and this could be expensive. One method I have used in the past is to run up the engine (on bellows) and warm up certain parts of the control/ignition circuit with a hairdryer. If the fault is heat related (or heat makes the fault begiin to show) then you can get down to quite an accurate diagnosis. You can also freeze the areas with freezer spray (RS components if u are rich) to generate the fault. I am only round the corner so give me a shout if you need some help

Rgds

Doug
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Old 28 October 2005, 17:42   #3
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It's probably just that suzuki's are one of the worst engines on the market and will never be reliable. I have sold quite a few suzuki's but got fed up with all the problems with them so I know stick to yamaha and tohatsu you can't go wrong with them.
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Old 28 October 2005, 18:30   #4
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Thanks for that Hensh, very constructive and grown up.
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Old 28 October 2005, 21:37   #5
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Quote:
Originally Posted by Hensh
It's probably just that suzuki's are one of the worst engines on the market and will never be reliable. I have sold quite a few suzuki's but got fed up with all the problems with them so I know stick to yamaha and tohatsu you can't go wrong with them.

That's not what they say about the 300hpdi!!!
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Old 30 October 2005, 04:19   #6
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Have you cleaned up all the component earths where they earth to the powerhead? From what I remember of Suzukis they are quite susceptible to corrosion (the yanks used to call them alka-seltzers...)

Just a suggestion...
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