Has Anyone Moved The Electric Fuel Pump From The Main Settee To The Engine Compartment On A 36 Mk I? Just Seems Like A Long Way To Travel Unnecessarily!
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Tom Neary X Aviator
Flying Vertical
Cat 36 MK I #616 1986
SSYC Milwaukee, Wis.
Has Anyone Moved The Electric Fuel Pump From The Main Settee To The Engine Compartment On A 36 Mk I? Just Seems Like A Long Way To Travel Unnecessarily!
Tom Neary X Aviator
Flying Vertical
Cat 36 MK I #616 1986
SSYC Milwaukee, Wis.
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Haven't tried it, no reason it could not work.
As long as you HAVE an electric pump the distance is not too big of a deal and one thing I know from dicking around with old V8 cars is that fuel pumps are usually happier in cool places than hot ones.
Jason V
Vancouver, BC, Canada
Good Point Jason! Just wondering if I`m getting bleed back sometimes its hard starting and there may be other issues I need to address. Thanks for the help
Tom Neary X Aviator
Flying Vertical
Cat 36 MK I #616 1986
SSYC Milwaukee, Wis.
I have a MKI and the fuel pump is mounted on above the engine to starboard.... the PO must have made the change.... I would think you would have sufficient fuel in the filter to get the engine to start no?
Tony
Tony Castagno
S/V Terra Nova (Hull #22)
Atlanta GA, Lake Lanier-based
1983 C-36 mkI M25XPB
It seems like its not getting gas! It sounds like it wants to start and when I pump the throttle it finally starts. When its warmed up it starts every time! I am starting to wonder if I have a glow plug problem I press for 30 seconds so I give it a chance to heat up like I said it sounds like its firing but I can`t go more than 30 seconds in fear of loading up the aqua muffler so I need to dig a little further!
Tom Neary X Aviator
Flying Vertical
Cat 36 MK I #616 1986
SSYC Milwaukee, Wis.
Also I was wondering if I do have a glow plug problem if adding a starting selinoid in the system would solve the problem I know the fuel pump is ticking away so I assume its working. If anyone has suggestions I`m all ears!!
Tom Neary X Aviator
Flying Vertical
Cat 36 MK I #616 1986
SSYC Milwaukee, Wis.
Tom,
I have followed this thread, it is possible you are loosing prime to the pump after the engine sits for a while. Could be allowing air in at the filter on the engine or any of the lines going from the electric pump to the engine.
Pumping the throttle on the engine does nothing as there is no accelerator pump in the injector like a carburetor.
I suggest before your next cold start that you remove the engine cover, turn the ignition on, unscrew the knurled knob used to bleed the fuel system. You will then hear the electric pump start clicking away, this will bleed the line from the pump to the injector. Close the knurled knob and heat the glow plugs and try a start. If it starts normally you may very well be loosing the prime to the injector pump from some small leak. This will also manifest it self with some engine surging just after start.
Other hard starting issues when cold can be caused by dirty injectors or low compression. Compression ignition engines often need help from glow plugs when cold, if starts are quick after the engine has been running it could indicate bad glow plugs, lack of fuel supply after sitting or low compression.
Cepheus dream
C36 MK I # 825
MK I Tech Editor No Mas
Thanks Steve! I will admit diesels are not my strongest points I`m still getting educated! I do know that its injected and what I thought I was doing when pumping the throttle was to let the fuel pump bleed itself and let more volume thru but I did not realize the knurled knob was a bleeder! As far as compression the M-25 has for its age only 660 hours on it so I thought would not be an issue I could give it a compression test! If I remove the glow plugs and keep them wired up and have a body push the button will I burn them out just to see if they are working? Also addressing the injectors I have an ultrasonic cleaner would that help and if so what type of solution should I be using? I will look for leaks in the fuel lines but I don`t smell diesel fuel down below and there was nothing in the bilge so it could be very hard to find outside of replacing all hose`s which would not be the worst thing to do.
Tom Neary X Aviator
Flying Vertical
Cat 36 MK I #616 1986
SSYC Milwaukee, Wis.
Tom, don't bother with removing glow plugs and testing compression, yet. I agree with Steve, check your fuel system first. When was the last time the fuel hoses were changed along with all the clamps? Next step would be to check the glow plugs.
Your C36 website undoubtedly has this kind of information, but here are some of our resources for you, too:
Bleeding 101 [url]http://c34.org/bbs/index.php/topic,6377.0.html[/url]
Engine Tech wiki: [url]http://www.c34.org/wiki/index.php?title=Diesel_Engine[/url]
Have you removed and cleaned the filter inside the fuel pump? Is your fuel pumped: tank -- Racor -- pump? See our Critical Upgrades for this and a series of hard starting issues:
[url]http://www.c34.org/wiki/index.php?title=Diesel_Engine[/url]
Stu Jackson, C34IA Secretary, C34 #224, 1986, SR/FK, M25 engine, Rocna 10 (22#)
I changed the original location of the fuelpump on our 36 #432. The original had the pump before the filter instead of after the filter... the pump was almost completely plugged up and it was hard to start. Fortunately these pumps are almost bulletproof a new filter and gasket (at NAPA) fixed the problem. I then mounted the pump and filter (after rebuilding) to the front of the water tank behind the engine. Ran all new fuel hoses to tank. According to the Surveyor the fuel pump should be within 15" of the engine now. I have not had any fuel problems since.
Alex H.
SV Alexanne, 1985 #432 SR
SF Marina Bay YH
Thanks Stu and Alex! I think Steve laid out all the possible problems to check in order and I agree with you Stu start with the fuel system, the boat is an 86 so I`m thinking the hoses are of that vintage and Alex while I`m replacing hoses, going to take your suggestion and mount the pump where you put yours! I think its a Racor and I`m not sure if its before or after the filter but it will be correct when I move the pump. I am going to put a starter relay in between the glow plugs and the button like suggested on the site hear on one of the threads! I think that will help as well. I`ve got my work cut out for me and it is a long winter here in Wis. Thank you all for your help and concerns!!
Tom Neary X Aviator
Flying Vertical
Cat 36 MK I #616 1986
SSYC Milwaukee, Wis.