[C38] bad injector on Universal 5424

[Robert Miller]

Speaking of clogged exhaust systems, I had a mechanic replace everything
from the manifold adaptor to the muffler.  My elbow had been reduced to less
than 1/8".  While the mechanic finished the installation I replaced the raw
water impeller.  I had already replaced the heat exchanger with a 3"
diameter one.  Prior to all this I only got 1800 rpm at full throttle and 4
knots.  I took it out yesterday and was able to pull 3200 rpm at full
throttle.  I ran it at 3000 rpm for one hour and at one point was making 7.2
knots.  The temperature never got over 170 degrees.  It's like a new engine.

 

Bob Miller

"Bolero" #113 in San Diego

 

From: listserve-bounces at catalina38.org
[mailto:listserve-bounces at catalina38.org] On Behalf Of Larry Malmberg
Sent: Tuesday, March 23, 2010 7:45 PM
To: 'Catalina 38 Listserve'
Subject: Re: [C38] bad injector on Universal 5424

 

Jon, I am sure you have seen the posts regarding the exhaust systems, you
may want to consider double checking yours, just in case.  A plugged exhaust
system could cause the problems you describe.

 

 

 

Best regards,

Larry Malmberg-President

Larry Malmberg Investigations and Security, Inc.
505 North Arrowhead Avenue - Suite 510
San Bernardino, CA 92401-1200
909-383-8565, 800-655-4549 Facsimile 909-383-8566
PI 15211, PPO 112446

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From: listserve-bounces at catalina38.org
[mailto:listserve-bounces at catalina38.org] On Behalf Of Jonathan Whitney
Sent: Tuesday, March 23, 2010 3:56 PM
To: listserve at catalina38.org
Subject: [C38] bad injector on Universal 5424

 

First, wanted to thank all of you who responded to my last question about
heat exchangers (all very helpful - many thanks!)  However, once that got
fixed, new issues presented themselves (naturally).  When I turn the engine
on, there is lots of grey smoke from exhaust (which has been occuring) AND
smoke actually emitting from the center injector (noticeable stream coming
directly from the housing holding the injector - this is new).  If the
injector were bad/dirty it would certainly explain both problems.  The
problem is, I have never removed injectors before and am unsure how to
proceed.  Some sources seem to say, just remove them and get them cleaned
(or rebuilt if they need to be) - however in Nigel Calder's book, he is
adamant about not touching injectors unless its the absolute last resort -
and to get a diesel mechanic to address it.  My question is:  

 

-has anyone else had similar problems of smokey injectors?

-what would likely cause this to happen?

-is this a direct sign of need of replacement or is cleaning possible?

-should all 3 injectors be treated equally or is it ok to just remove and
clean the noticeably faulty one?

-is it time to call a mechanic, or can I safely proceed (without special
tools) and not cause damage

 

Any information/help would be greatly appreciated 

 

Many many thanks,

Jon Whitney

 

Honolulu

Hull #54 "Kuu Haku"

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