squeaky noise suzuki df250 - need some help pls

gohelm · 05 September 2012, 14:39

Guys,
I have a question for my Suzy DF250 :
when idling after using the engine for some time i hear a light squeeking noise, much like a cambelt slipping. at revs above idle the sound is gone. what can this noise be?

1. this is a chain timed engine - so it cannot be a cambelt
2. it seems that when it has rained or at a day with high humidity it is more evident.
3. there were no rodents found in or around the engine

Have spoken to a local suzuki shop who advised that 'it is nothing serious' however still would like to know what it is (and indeed KNOW it isnt serious for sure)

any thoughts?

Erin · 05 September 2012, 15:15

No idea I'm afraid. Is it definitely the engine or could it be the rubber mounts squeaking due to vibration at idle?

GordyP · 05 September 2012, 15:48

I had exactly the same thing on an Evinrude Ficht engine, was told 'nothing to worry about' next time I went out it ate its own piston rings! After the event the consensus seemed to be that the oil injector had failed on that cylinder.

gohelm · 08 September 2012, 07:27

Quote:

Originally Posted by GordyP

I had exactly the same thing on an Evinrude Ficht engine, was told 'nothing to worry about' next time I went out it ate its own piston rings! After the event the consensus seemed to be that the oil injector had failed on that cylinder.

Indeed my fears...

Crusher · 08 September 2012, 08:09

Is the engine very old? Or done many hours? Or even still in warranty ?

I'd be concerned if it was mine!

Make sure you let us know when you do find out what it is!!!

jyasaki · 08 September 2012, 19:03

Where does the noise originate?

F115's had a similar problem, caused by a bushing around the driveshaft in the upper leg. A heavy dose of lubricant down the shaft takes care of it for a while, though the "official" fix is to replace the bushing with one having a slightly larger bore (needless to say, I use the lube remedy.)

jky

gohelm · 09 September 2012, 08:26

Quote:

Originally Posted by Crusher

Is the engine very old? Or done many hours? Or even still in warranty ?

I'd be concerned if it was mine!

Make sure you let us know when you do find out what it is!!!

Its a 2010 engine blockvwith new cyl heads 2011 and have 55 hours on it now- warranty via dealer (see above)

jyasaki · 09 September 2012, 21:06

Take it back. Even if it's trivial, it's not per design and thus should be taken care of.

jky

Crusher · 23 September 2012, 09:59

Did you manage to find out what the squeak was yet??

gohelm · 25 September 2012, 22:35

Not yet but the engine has a date with another suzuki service guy tomorrow for a 2nd opinion....

Crusher · 25 September 2012, 23:10

Fingers crossed its very minor!! :-)

Crusher · 20 December 2012, 18:46

So did you locate the problem then??

gohelm · 02 January 2013, 08:46

yes we did !

Apparently there was something more going on than just a 'noise'. During the last race of the season the engine started smoking in white and we had a film on the oil i.e. all the tell tale signs of a blow head gasket . When trying to find the origin the HGF it turned out that there were some surface issues on the block and the cylinder head and they for sure where not a tight fit anymore.
So the engine head and the engine blocks have been flattened and the liners of 2 cylinders needed some surface work (luckily no oversized cylinders needed) . Apparently the engine had been thermally overloaded in her former life and nobody cared to think about the consequences that could have... (we purchased it as overhauled old block new parts, new cyl. heads etcetera)

Not the best way of ending the season i must say ... glad we found it in time and now also 'mr squeaky' is gone!

Crusher · 02 January 2013, 12:58

Glad it's all sorted......... Even though it sounds expensive!!!!!

gohelm · 02 January 2013, 13:27

Quote:

Originally Posted by Crusher

Glad it's all sorted......... Even though it sounds expensive!!!!!

...quite!

gohelm · 25 March 2013, 07:53

Update : after 15 minutes of flawless running the engine again started to run badly /rough (missing at least 1 cylinder). Further investigation still showed a 'misfire' in cyl 1. The camshaft adjustment seems to be off and....how thing could get possibly worse, there is a cooling water leak on the top of the block but only when the engine is revved. Is there anyone on the forum who had similar issues with a df250 ?

Crusher · 25 March 2013, 10:26

not good news. I'd DEFINATELY be talking to whoever did all the work, and questioning the quality of their workmanship...

Definitely sounds like a very poorly engine again....

gohelm · 30 March 2013, 09:21

Yes it does. No chance in the world will keep it....

gohelm · 20 June 2013, 22:47

Update

And....engineless again! I couldnt mitigate with the seller ( who must be EX suzy dealer for a reason?) so here we are with a cracked shortblock and a rib which i could row if she wasnt 1500 kilo....no ribbing this year while saving up for a (new!!) engine next year. I am not sure how I will handle the guy who sold me this one (i have a few ideas but they do not guarantee results)

If anyone has bright ideas about engines for me....pleased to hear!