The Boating Forum - Yamaha 250 HPDI Ticking noise- bad news

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Kendall
07-28-2005, 02:10 PM
Some may remember the ticking sound I heard from my Yamaha 250 HPDI's on my 31 Contender about which I was concerned. I have run the boat and fished four or five trips. The last trip I ran to weigh in from Georgetown, SC to Carolina Beach (Wilmington), NC for a tournament weigh-in which was a run of over one hundred miles. The motors did okay. I decided to take it in to the dealer for service to check on this problem.

The good news is that the compression on all cylinders on both motors is good. The bad news is that they confirmed that the ticking noise now heard on both engines is what I feared. A rod problem. A rod is not thrown yet obviously, but has a bad bearing on both motors.

The dealer said he would fix the bad bearings on both motors under warranty. He said if I would blow the powerheads under warranty they could replace both but there is no telling when it will happen. Since I am in third place in a SKA division, I don't want to risk fishing the boat and not making weigh in for any upcoming tournament because of a blown power head. Yes, I would rather have new powerheads but I also need the reliability (relative with these HPDI's) of functioning motors for these upcoming tournaments. Therefore I am going to get these bearings fixed. It is actually more work to do this than to just change blown powerheads.

A difficult dilemma. Again a sad story regarding big block HPDI's. It will prevent me from fishing this weekend's tournament which is in a different SKA division which we were also doing well in.

Has anybody else had bad bearings?


Inbound
07-28-2005, 02:35 PM
Although you seen a number of issues on this site the Z250 hasn't seen that many rod bearing problems. Also when rod bearings go bad they take the pistons with them via metal pieces of rod bearing passing through the motor. Generally you can't just fix a rod bearing in a two stroke without replacing the crank and fixing any other damage that has been caused to the block. Either get another opinion or get those powerheads replaced. Why would you fix a rod bearing when "It is actually more work to do this than to just change blown powerheads." If you are still under warranty and the rod bearings are actually bad Yamaha will cover replacement of the powerheads. They generally don't want rod bearings fixed under warranty. The labor is just too much. It is better for them to replace the powerhead. Sounds to me like somebody has bad information or has a defective opinion.

Shin-Dig
07-28-2005, 02:52 PM
You do not say what year the engines are but if they were 2003's I would blow them up and get new power heads and start with zero hours. This would hopefully extend the time before the entire engine needs replacement.


I would think that a powerhead with zero hours is worth more the repaired engine. A new bearing will not extend the actual engine life if other problems have developed over the life of the engine. just think of a new powerhead as a heart transplant. A new bearing is a stint.

You may want to tread lightly as knowingly blowing an engine after a problem has been diagnosed may void your warranty.


Kendall
07-28-2005, 03:43 PM
Yes, I would rather have new powerheads but they won't replace them unless they are blown. With the track record of these 2003 powerheads (one has already been replaced), it is likely to blow in heavy use in the future.

Wahoo-26
07-28-2005, 04:11 PM
Depending on how well ou know the mechanic you might ask him to take a ride with you and see how they sound at WOT. Might make the powerhead replacement an option.

Sorry to hear of your misforture. I wish Yamaha would step up to the plate and take care of all you folks suffering from premature failures on these engines. They should just recall them and swap them out for 4 strokes and make this go away in my opinion. I know it wont happen but they sure arent making a sound fix swapping all these powerheads.

Wahoo

never eneough
07-29-2005, 07:53 AM
If you wait until the motor blows,will yamaha fix it?? If they get wind of a pre existing problem{a bearing problem} they might say that a blown powewr head is not their responsibilty.Also is the dealer being fraudulant toward yam. by allowing a known mechanical problem [under warranty]to deteroaite,causing a greater cost to yamaha!

KevinM
07-29-2005, 08:10 AM
Why not call Yamaha and state your dilema. Tell them you know Yamaha is having problems with the high HP HPDI's and since you depend on these engines for your tournament status, you feel very uncofortable about the change of the rod bearings and you feel new power heads should be done.

scott-hydra24
07-29-2005, 10:03 AM
I agree with never enough. I think Yamaha would take care of this, but remember from their standpoint.....if the guys on this thread are right and what you are doing is a patch job on Yamaha's dime, they may reject some of the warranty work. My experience with Yamaha was very good, literally they had the block in the dealers hands within a few days of them ordering it, and that is with shipping from GA to RI. I think you are a heck of a lot closer.

Go for the new block(s).

BTW, i'm not sold the ticking noise means anything. My buddy has had a motor ticking from day 1, and at 600 hours he's never lost a day, and this is a Z250. I still bring my EPIRB every time I go out with him though ;)

Kendall
07-30-2005, 05:05 AM
That is why I am trying to get this problem fixed now instead of getting new powerheads. If there is damage, the compression would not be good on all cylinders.

OBMD
07-30-2005, 08:18 AM
Yamaha is having #2 & #4 piston melt down, not rod bearing failures on the 3.3 HPDI. Call Yamaha CR in Kennesaw,GA and express your concern. Ask for a field rep visit before the units fail.

Broz
07-30-2005, 08:22 AM
Hey Kendall does the ticking occur only ay idle, high rpm, or both ? I have 20 hrs on the 4th head on my 03 250 hpdi and my engine ticks below 2000rpm and stops ticking above that. Im being told that it is the injectors and that it is normal. The funny thing is that it did not do that before.

Kendall
07-30-2005, 08:34 PM
Broz, The ticking sound is at low RPMs, such as idling speed. It is louder on the starboard motor than the port. I was hoping it was related to the two cylinders being dropped at low RPMs but the mechanic confirmed my fears about a bad bearing. They service a lot of 250 and 300 HPDI's being a Contender dealer and apparently it is an unusual sound for them. Why in the world is it on both motors? Maybe this is the secret of why so many of these big block HPDI's are blowing unknowingly. And yes these are 2003 motors. Broz it may not be the injectors. I would get a second opiniion. Maybe that is why so many of yours and everyone's powerheads are blowing.

tarnold
07-30-2005, 08:46 PM
Kendall, how did you do today?

Tommy

Kendall
07-31-2005, 05:50 AM
Tom, I did not fish the tournament this weekend.



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