Flood damaged 1991 zzr250

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May 17, 2012, 02:58:41 pm

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[tom_93]

hey guys
I have come across an old flood damaged zzr250 which no longer runs.
I thought this would be a good project considering I am studying to be a mechanical engineer (and would also like to be able to ride to uni).

The bike has not been used since the floods at the start of this year

I am told the bike needs new bearings (but not what kind or purpose).
The battery still works but the lights are dim, the blinkers are very slow, and when you try to start it you only hear a faint buzz.

I have removed the fairings and found no significant rust or corrosion.
I have also removed the oil and there is no water or dirt inside so I'm hoping the engine is in tact.

Would any one have any ideas on where to start? I'm hoping that this is a simple case of new oil new fuel and fixing the wiring but I'm not a mechanic and I don't have much experience with electrical systems.

I would greatly appreciate any help or wisdom you can offer

[motomech]

Tom, first thing I would do is pull the spark plugs and squirt oil in the cylinders to keep the rings from rusting/seizing but it could be too late for that especially if the bike was submerged.
The buzzing you hear is most likely the starter straining to turn the engine over, either from a low battery charge, stuck rings/pistons or the starter motor has water in it and is shorted.
Good luck on your project

[tom_93]

OK
so i pulled the spark plugs out and they're in good shape and the pistons are easily moved *phew*

I also checked the battery and it put out 9 and a half ish volts, I don't know that that is enough of a drop to cause any major problems in the system though so I'm thinking that the terminals on the starter motor are corroded, but i will charge the battery just in case.

I would like to check if the carby needs a clean because it looks like the air filters haven't been sitting on properly but other than that what do you think my next move should be?

also the battery is missing one of the rectangular nuts that sit in the terminals, where abouts would someone be able to buy these cause I dont want to buy a new battery yet.

[motomech]

Tom, glad your engine isn't seized. 9 volt unloaded battery voltage is too low, charge it and it should be no less than 12.5v
You should be able to get the battery bolts at any motorcycle shop, they also come with new batteries.

[vamdrup-mc]

Mjello Tom - as Steve states, get a good charge in the battery, and get a bolt in the terminal, because both of these issues will cause the starter relay to make the buzz you mention. Whether or not you have had gasoline in the oil, it is a good starting point to change that including with the filter, squirt oil in cylinder, charge battery and simply try to start her up, and see what happens. Then we can take it from there.

Regards
Lemmy

[tom_93]

OK the battery is completely rooted

it wont charge at all
so at the moment Im trying to get the air filter box out so i can clean both it and the carberettors, is there a way to do that without taking the back section of the frame work of the bike cause its a massive pain in the tail feathers

Im not sure if it will be worth buying a new battery for this bike yet so will it be a problem to jump start it off another battery?

cheers
tom

[vamdrup-mc]

Mjello

No problem to jump-start with a second battery, but keep it attached as long as you have the engine running, in order to avoid a strain on your charger.

Regards
Lemmy

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