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Old 18 August 2009, 11:07   #1
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DT200EFI Flushing point.

I wonder if anyone can confirm the situation with regard to the Flushing port on my 1998 Suzuki DT200EFI. Two Suzuki dealers have now given me conflicting information.

Does anyone have a Suzuki owners manual for the DT200EFI that gives instructions for the use of the flushing/hose attachment point on the cowling?

Iíve always flushed it using muffs, which are a pain to fit properly, and some water always escapes around the side. I get a good tell tale, but donít like leaving it running for more than 5 mins as it starts to oil up idling for that long. Plus, even though I think the unsilenced sound of the exhaust bouncing off my garage door is glorious, Iím not sure my neighbours agree.

Every few times I also attach the hose to the flushing point on the cowling and leave it running water through for @1/4hr WITHOUT the engine running. The pipe work goes directly to the top of each cylinder head, and water pours out of every orifice including the tell tale and the water inlets below the pump.

One Suzuki dealer told me NEVER run the engine with a hose attached to the flushing point as the impellor wonít be lubricated, and one told me you have to run the engine to warm the motor enough to open the thermostat so the water gets to the cylinder heads.

The first one could be wrong as water is coming out of the water inlets so must be going through the water pump the wrong way, and the second one must be wrong as the flush point pipe work goes direct to the heads avoiding any thermostat.

My thoughts are that when using the flushing point without the engine running there must be part of the system that isnít flushed because the thermostat is closed (Although Iíve never seen a thermostat on the engine) but Iím not sure enough water will get into the pump against the normal flow to lubricate it with the engine running.

Thanks

Nasher
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Old 18 August 2009, 11:26   #2
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Can you take the thermostat out - or doesn't it have one?

I have also read this conflicitng advice.

Can you be really crafty and use BOTH???
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Old 18 August 2009, 11:28   #3
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A video of a DT225 being flushed - shit quality video but he is running it in a big tank of water - may be the best solution.
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Old 18 August 2009, 11:52   #4
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Assuming the engines are roughly similar, the Yamaha manual says (about using the flushing point) "do not perform this procedure when the engine is running. The water pump may be damaged and severe damage from overheating can result."
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Old 18 August 2009, 13:30   #5
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Quote:
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I
.

One Suzuki dealer told me NEVER run the engine with a hose attached to the flushing point as the impellor wonít be lubricated,
Nasher
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Old 18 August 2009, 17:37   #6
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I doubt for a minute that the engine should be running when using the flush port. My DF200 and previous DF90 both said to leave the engine off. I would think the flush point is past the thermostat location, so open or closed it shouldn't matter.
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Old 18 August 2009, 17:48   #7
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Nasher, I ran my DT using the flushing point for the whole of the time I owned it. Can't remember how long but it was years. It was flushed after every trip and it never needed a replacement pump impeller during the time I owned it.
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Old 19 August 2009, 03:09   #8
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Thanks for the replies guys, looks like it'll be safer to use the flushing point without the engine running then run it up quickly on the muffs.

I'd love to be ale to run it up in a big tank of water each time but don't think I have the room etc.

Nasher.
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Old 20 August 2009, 06:08   #9
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Quote:
Originally Posted by Nasher View Post
Thanks for the replies guys, looks like it'll be safer to use the flushing point without the engine running then run it up quickly on the muffs.

I'd love to be ale to run it up in a big tank of water each time but don't think I have the room etc.

Nasher.
i have done it with smaller engines , use a strong waterproof bag with eyelets so you can it can be held up with rope ,,,old army kit bag or sail bag and fill that up ,as long as it goes over the cav plate and you top it up with water and you dont put it in gear it might l be ok for a quick flush.,,,and you dont rev the b...ks off it ,,,i know with a lot of engines when using the flushing point the water intake needs to be blocked off with tape or a clamp .
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Old 20 August 2009, 11:58   #10
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i know with a lot of engines when using the flushing point the water intake needs to be blocked off with tape or a clamp .


If you're using muffs and your motor has more than 2 water intakes (and you're running the motor), you need to block off the unused ones.

Don't think it's an issue when using a head-mounted flushing port and running water through a non-running engine...

jky
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