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Lifespan of PCM mechanical fuel pump?
Mine works just fine. But it appears to be original, or at least very old. Are these things capable of failing suddenly (as in torn diaphragm or some such)? It is 29 years old. . .
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1984 Stars and Stripes Powerslot White with blue stripes. purchased 9/2012 |
#2
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If you are asking if its smart to replace parts before they break, the answer is Yes.
![]() Its all part of maintenance. |
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..........
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John 3:16-18
Last edited by waterlogged882; 09-14-2015 at 08:46 PM. |
#4
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Quote:
JTR
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1983 MasterCraft Stars and Stripes Cream/Red Metal Flake "Powerslot" "The misery that is now upon us is but the passing of GREED-the bitterness of men who fear the way of human progress. The hate of all men will pass, and dictators die and the power they took from the people will return to the people and so long as men die Liberty will never perish." -Charles Chaplin- |
#5
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Ditto for mine, but it's on an Indmar (25 yrs. old). Great question though. I didn't like the 'fail without warning' answer. By that I'm assuming you mean it will just leave you stranded in the middle of the river, etc., and a tow in will be needed (ie. you're not limping home). May need to make a priority out of replacing it in mine now. I was thinking I'd like to just get one and keep on board, but seems some preventative maintenance is in order.
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1988 Tristar 190 Sport, 351W w/GT-40's, 1:1 Velvetdrive |
#6
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yeah I was just asking because I happened to be watching the wheeler dealer show awhile back and Edd (the master mechanic on the show) took apart an old fuel mechanical fuel pump that he had replaced for preventive maintenance, and the diaphragm inside was getting cracked and rotted, and probably would have failed soon. It was as old or older than mine. That was a pump off a different engine than a 351 (obviously) but I assume mechanical fuel pumps must all be pretty similar. . . got me thinking anyways.
Lol I guess I'll get one!
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1984 Stars and Stripes Powerslot White with blue stripes. purchased 9/2012 |
#7
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The fuel pump on my '77 appears to be original and is on the Spring replacement list. I am not going to bother keeping the new one handy - I'm just going to put it on. The first one lasted 36 years so I should be good for another 36.
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CUSTOM WHEEL & TIRE PACKAGES $125 LED TRAILER LIGHT PACKAGE - FREE SHIPPING REBUILDING HOLLEY MARINE CARBS - $289 DELIVERED REBUILT COMPLETE MARINE HOLLEY 4160 CARBS FOR 302, 351 & 454 STARTING AT $450 DELIVERED Email - [email protected] |
#8
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I got 15 years out of the low pressure fuel pump on my PCM GT-40 (this is the one on the outside of the FCC). Just replaced it last month. It was considerate enough to go out (gradually) at the ramp). I've never heard of a PCM fuel pump to fail gradually. It started tripping the 15a breaker and making a nasty noise on prime. It was a short swim back to the ramp with the boat in tow.
High pressure fuel pump is still going strong (as far as I can tell).
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Previous: 1993 Prostar 205 Red 1998 Ski Nautique, PCM GT40, 310 hp, , Acme 4 blade, Perfect Pass SG/Zbox. FAQ Be kind. Have fun. |
#9
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Quote:
After reading some of the Fuel Pump 101 thread, kind of glad I still have the mechanical unit. Had a couple of the electric fuel pumps go out in trucks, Tahoes, etc. It is a bad feeling, and then you have to tow it somewhere or have it towed. Having it go out in a boat just compounds the problem.
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1988 Tristar 190 Sport, 351W w/GT-40's, 1:1 Velvetdrive |
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