[C320-list] exhaust blockage

[Donald Lawson]

Steve
An exhaust riser problem would probably be accompanied by engine running hotter than normal. Mine ran fine to about 1500 then ran hotter than normal at 1700. At the dock, in neutral, engine ran fine up to 3000, temp normal.   Backpressure issue under load. Concur with Jeff and Chris, check all possible explanations before spending $.
Don
Mandolin Wind, #1004
On Nov 20, 2015, at 3:00 PM, Ted Barto wrote:

> From Dana Point, the parts are available at Boatswains Locker in Costa Mesa, they were $350 last time I got them.
> http://www.boatswainslocker.com/
> Ted S/V NancyB #880
> 
> -----Original Message----- From: Chris Burti
> Sent: Friday, November 20, 2015 1:25 PM
> To: 320
> Subject: Re: [C320-list] exhaust blockage
> 
> The replies of the others who have posted about the elbow are most likely
> correct, but before you blow a gasket in your wallet, try using the pump on
> the Racor fuel filter and stroking it about 10 times. On the series around
> our era, there is reportedly a check valve in the fuel return line that
> lets air back up into the injectors. Then the engine runs fine but not over
> about 1500 RPM. There is a re-plumbing kit available from Yanmar that is a
> bit pricey and I've never bothered to fix ours because the re-plumbing is a
> bit of a pain and pumping isn't.
> 
> Can't hurt to try first.
> 
> Chris Burti
> Commitment, #867
> 
> On Fri, Nov 20, 2015 at 1:30 PM, Steve Turbis <sturbis at gmail.com> wrote:
> 
>> Has anyone had this problem. I can't get my Yanmar diesel over 1700 RPMs
>> and my mechanic says I have to replace the elbow and manifold because
>> typically this engine builds up soot in this area and the motor can't
>> function properly because exhaust keeps backing into the motor. Any ideas
>> if this is true? He wants to charge about $1000 to repair it.
>> 
>> Steve
>> "AT LAST"
>> Dana Point Ca
>> 
> 
> 
> 
> -- 
> Chris Burti
> Farmville, NC