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October 20th, 2006, 10:39 AM   #1
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Engine died 2002 Fe650

My engine died on my just aquired husa 650 fe, it's a 2002 model, and when i bought it I already expected it to need a rebuild this winter, but the problems came quicker then expected, well, it were a fun couple of hours on this beast anyway

As for the problems, I was 'practicing' wheelies on my Husa, 3rd gear, open the throttle and up she came, nice and easy. Until i had a loss of power, the engine didn't stall, just no response when i opened the throttle. Then suddenly the rear tire locked up, like when the entire engine siezes, the engine stalled, but 1 second later everything was ok again, and another couple of seconds later there was the loss of power again.
I barely made it home (about 2 km) and when i reached my driveway it died, and i can't get it to start anymore. The engine wasn't extremely hot (by feel) so I don't think it overheated.

When I drained the oil only about 0.5 litres came out of the engine. The oil has just been changed about an hours driving time ago. So where did my oil go, there were no oil leaks, and the exhaust fumes were cristal clear, so I don't think she was burning up oil? There were no metal flakes in the oil also.

What's my plan of action now, what do I check first to narrow down the reasons for this problem?
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October 20th, 2006, 11:55 AM   #2
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RE: Engine died 2002 Fe650

Clean the carb, adjust the valves, new gas, new oil, new spark plug, then let us know.

What part of Belgium are you from?
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October 20th, 2006, 02:27 PM   #3
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RE: Engine died 2002 Fe650

any noises? may have snapped the crank pin.

sorry!

regards

taffy
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October 20th, 2006, 11:21 PM   #4
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Re: RE: Engine died 2002 Fe650

Hi,

I'm inclined to agree with Taffy something bottom end parcially sized big end, with the front end up in the air lack of lubrication. As for loss of oil if it hasn't burnt it you have lost it. With the bike up vertical has it blown it out of the engine breather?.
When we raced the RC30's back in the eighties the standard sump wasn't deep enough so when cranked over for some time it would starve the crank of oil pressure and bang. so we had to fit deeper sump and baffles. Is the big end pressure fed or just oil splashed ?.

Sparks,
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October 21st, 2006, 08:19 AM   #5
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@ Le frog, i'm from Bruges, Flanders

@ Taffy & Sparks there were no unusual noises coming from the engine, and I checked the oil when I changed it out and didn't find any metal particles.

About the eninge blowin out the oil through the breather, I was 'practicing' wheelies, and I suck at it, so the front was up for 5 sec max at a time.

About the crank pin, i don't think it broke? I took the spark plug out (wich looked perfect) and turned over the engine with a wrench on the ignition thingie. The piston goes up and down and the valves appear to function normal. So i don't suspect something wrong with the crank, or am I seeing this wrong?

When turning the engine with a wrench on the ignition thing, is the piston supposed to go up and down smoothly? Now when i turn it around, just when the exhaust valves start to open, the pressure builds up (no spark plug in) and then when i pas a certain point the piston 'falls' back down, then the pressure on the wrench is the same until the exhaust valves start to open again. Is this normal or is the piston supposed to go through all the strokes with the same amount of pressure on the wrench?
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October 21st, 2006, 09:12 AM   #6
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Hi,

Turning the engine over without a plug in yes you will feel resistance from time to time this is pressure is on the valve springs as the cam comes into contact with the followers.
There must be something a miss for it to lock up the back wheel. with not owning a Berg yet I wouldn't know how much oil they take when you said you drained out .5lt how much has it lost?. If it's going to in bits this might be a good time to do it, would be interesting to know what has caused this though.

Regards

Sparks.
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October 21st, 2006, 09:34 AM   #7
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I made a mistake in the last post, the resistance happens only when the INLET valves open, for the rest of the cycle there is no resistance, shouldn't there be resistance when the inlet valves open?
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October 21st, 2006, 10:11 AM   #8
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Hi,

I have not worked on many four stroke singles and not at all on the husaberg but you generally find resistance on both inlet and exhaust valves when they are opening but it all depends on the cam profile to how much resistance is felt. If the compretion is good then it safe to say that they are working correctly. I think they use timing gears on the Husaberg not a cam chain. Check the pinions for missing teeth and check the valve timing is correct. I think you said in your previous thread that it had just been serviced or something do you know exactly what they did?.

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Sparks
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October 21st, 2006, 04:24 PM   #9
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belgique

used to go in a bar once called the belgique. it was in monchengladbach i think near RAF wegberg in germany. a house of sin and ill repute i may add......

you have probably got just one broken exhaust valve spring. go into the gallery, go to 'lineaweaver' and he still has some photos of snapped valve springs.

indeed, this happened to someone here just in the last few months. anyone else recall when? the thread?

regards

Taffy
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October 21st, 2006, 04:31 PM   #10
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Originally Posted by Taffy
indeed, this happened to someone here just in the last few months. anyone else recall when? the thread?

regards

Taffy
Hi all,
I believe you will find the other thread was by faktor- his friends 06 650 had a broken exhaust valve spring at 4000kms.
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