Reply
 
Thread Tools Display Modes
 
Old 04-13-2014, 05:37 PM   #1
Senior Member
 
Bilgewater's Avatar
 
City: New Bern, N.C.
Country: USA
Join Date: Jun 2011
Posts: 257
Perkins Fuel Injectors

Had a very pleasant surprise yesterday. I removed the injectors from my 1973 4-236 engines and took them to a shop for inspection/overhaul. 40 years old, about 3800 hours on them. All they needed was a little cleaning, bench-checked good to go. Only charged $64.00 for it. The guy said these injectors were bullet-proof, as long as the fuel was clear of water. They don't make them like that anymore. Old guys (and old boats) rule!
Attached Thumbnails
Click image for larger version

Name:	old.jpg
Views:	84
Size:	158.3 KB
ID:	29060   Click image for larger version

Name:	IMG_0694.jpg
Views:	109
Size:	149.0 KB
ID:	29061  
__________________
Advertisement

__________________
Bilgewater
"Keep putting off till tomorrow, and you'll end up with a lot of empty yesterdays" Prof. Harold Hill
Bilgewater is offline   Reply With Quote
Old 04-13-2014, 06:02 PM   #2
Guru
 
Forkliftt's Avatar
 
City: Biloxi Mississippi
Country: USA
Vessel Name: Patricia Louise II
Vessel Model: 1983 42' Present Sundeck
Join Date: Oct 2007
Posts: 2,433
Bilgewater
IMHO, a 4.236?is bullet proof! Lull of those fuel filter changes are paying off. Clean fuel. No problem. Introduce a little water then comes steam/rust/wear.


Lehman 135 Twins
__________________

__________________
Steve Point Cadet/ Biloxi, Mississippi USA
*Present 42 twin 135 Lehmans
Forkliftt is offline   Reply With Quote
Old 04-13-2014, 07:10 PM   #3
TF Site Team
 
FlyWright's Avatar
 
City: California Delta and SF Bay
Country: Sacramento, CA, USA (boat in Vallejo)
Vessel Name: FlyWright
Vessel Model: Marshall Californian 34 LRC
Join Date: Apr 2008
Posts: 10,185
I love hearing that! I'm 4 years and 1000 hours behind you, Bilgewater.

But I did have a stbd water contamination shutdown last summer that has since been remedied. What's "a little water"? Mine both seem to run as well now as they ever have.
__________________
Al

Custom Google Trawler Forum Search
FlyWright is offline   Reply With Quote
Old 04-13-2014, 09:14 PM   #4
Guru
 
Ski in NC's Avatar
 
City: Wilmington, NC
Country: USA
Vessel Name: Louisa
Vessel Model: Custom Built 38
Join Date: Jan 2014
Posts: 3,889
I've run, worked on, and owned many various diesels for over 30years. In all that time, it's amazing how FEW injectors I've had to replace. Most were Detroit rebuilds, but that is another topic. It's one of the last things on the list when I am troubleshooting.

Generally very reliable, those injectors.
Ski in NC is offline   Reply With Quote
Old 04-13-2014, 09:17 PM   #5
Guru
 
Forkliftt's Avatar
 
City: Biloxi Mississippi
Country: USA
Vessel Name: Patricia Louise II
Vessel Model: 1983 42' Present Sundeck
Join Date: Oct 2007
Posts: 2,433
Flywright, I'm not sure I can give you a definitive answer, I have just heard over the years that introducing moisture to an injector that is in a hot engine causes the steam/ rust result. I'm sure you are running a CAV filter set up and injector pump- and chances are any moisture you saw never made it to the injector.


Lehman 135 Twins
__________________
Steve Point Cadet/ Biloxi, Mississippi USA
*Present 42 twin 135 Lehmans
Forkliftt is offline   Reply With Quote
Old 04-13-2014, 11:24 PM   #6
Guru
 
Egregious's Avatar
 
City: Sunset Beach, NC
Country: USA
Vessel Name: Polly P.
Vessel Model: Monk 36
Join Date: Feb 2010
Posts: 554
Bilge,

I wonder if you've noticed an improvement in fuel economy (maybe too soon) or less smoke due to the cleaned injectors. I've got a 6.354 and never had any problems, but I'm wondering if a proactive cleaning might be easy and cheap.

Woody
Egregious is offline   Reply With Quote
Old 04-14-2014, 01:43 AM   #7
Guru
 
tpbrady's Avatar
 
City: Anchorage/Wrangell
Country: USA
Vessel Name: Silver Bay
Vessel Model: Nordic Tug 42-002
Join Date: Sep 2012
Posts: 506
I had one injector on a 6.354 that appeared to be causing the engine to run a little rough. I found it using an IR thermometer. That one injector was about 20 degrees cooler than the rest.

Tom
tpbrady is online now   Reply With Quote
Old 04-14-2014, 05:55 AM   #8
FF
Guru
 
FF's Avatar
 
Join Date: Oct 2007
Posts: 16,531
Should water get thru to most any injector , rust is hardly the problem,

The water at high temperature can turn to steam and the pressure blows the tip off the injector.
FF is offline   Reply With Quote
Old 04-14-2014, 04:11 PM   #9
Guru
 
Edelweiss's Avatar
 
City: PNW
Country: USA
Vessel Model: 1976 Californian Tricabin LRC
Join Date: May 2011
Posts: 1,834
Quote:
Originally Posted by Egregious View Post
I've got a 6.354 and never had any problems, but I'm wondering if a proactive cleaning might be easy and cheap.
Woody
If your 6.354 is running smoothly and no smoke, it's not necessary to have the injectors cleaned or rebuilt. They'll let you know when they need service!!

My starboard 6.354 has one injector now that is hanging up occasionally and will smoke to beat hell, but happens only at start up. We can't figure out which one is doing it, so I will pull all six and have them checked by the injector shop. They can bench test them for pressure and spray pattern in short order and rebuild the bad one. Much easier and cleaner than trying to test them on the engine. Just don't forget to replace the aluminum washer from around the nozzle tip with a new one.
__________________

__________________
Larry B
Careful . . .I Have a Generator and I'm not afraid to use it !
Edelweiss is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





All times are GMT -5. The time now is 05:42 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012