What Caused It?

[Gentleman]

Here's a pic a customer sent us. Said he bought our 066 cylinder kit, ran one tank of gas and this happened.

Of course he blames the parts and wants his money back.

What are your thoughts? We never get complaints like this from the experienced guys.

 

[Onan18]

Air leak or straight gas, more than likely an air leak. Never fixed the problem that killed the first top end.

Joe

 

[spencerpaving]

I had that happen on one of my alky saws this year....scoring all the way around...cyl was unscathed...nearest I could tell was that I goofed on my oil ratio when I mixed the fuel

 

[jake wells]

50:1 mix

 

[skippy]

Straight gased would be my guess

 

[Andydodgegeek]

Air leak or straight gas, more than likely an air leak. Never fixed the problem that killed the first top end.

Joe

I agree with this.

 

[junkman]

Did they find the problem that broke the first top end before they put a new one on ?

 

[d.l.d]

Looks like straight gassed. From what I've seen when people have brought me a saw and told me they straight gassed it. I'd agree with Onan18 on the fact that he never fixed the original problem but in my opinion it would have had to be a massive air leak for one tank to do that and the saw would have raced bad enough that it would have taken a dumba** not to shut it down and fix the problem especially after spending money on a new top end. Ive fixed saws that have had several tanks ran through them with an air leak and not looked close to that bad. Some not even scored at all just ran like crap. Also the exhaust port has to much carbon on it to have had only one tank ran through it.

 

[jake wells]

pull the jug and check to see if there is 4 corner scoring going on.

 

[Deets066]

50:0 mix, probly runnin the same straight gas that smoked the first one

 

[Gentleman]

Did they find the problem that broke the first top end before they put a new one on ?

Of course not. Just throw another kit on. They never believe that it could be an air leak.

My first question is always "Did you do a pressure test the crankcase?" The typical answer is "No, it had plenty of compression".

 

[beaglebriar]

I agree with all of the above. Ask the customer if they did a leak down test. The answer will probably be "HUH?"

 

[beaglebriar]

Sorry Gentleman didn't see your post. Basically the same thing .

 

[Gentleman]

I agree with all of the above. Ask the customer if they did a leak down test. The answer will probably be "HUH?"

I once had a customer tell me that "shops in my area don't do pressure tests".

 

[Greenthorn]

Ask them how it idled?

 

[beaglebriar]

That's the problem. Most guys that can rebuild a saw aren't dumb. They just don't understand that troubleshooting the original problem is what's most important.

 

[exSW]

Nothing about that looks like defective parts. Ask the guy if the slug and jug he took off looks just like that one.

 

[beaglebriar]

Top end kits should come with some clear cut instructions all over the box so there's no way they can be missed.... Or something.

 

[Deets066]

Of course not. Just throw another kit on. They never believe that it could be an air leak.

My first question is always "Did you do a pressure test the crankcase?" The typical answer is "No, it had plenty of compression".

When you sell the quantity that you do your bound to run into this sooner or later. Most likely often too

 

[the GOAT]

You going to send him a linkto this thread along with hearty GFY and your refund?