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Perkins diesel question 4.154 in 45' Roberts Ketch

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Perkins diesel question 4.154 in 45' Roberts Ketch

Old 01-25-2019, 06:46 PM
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Default Perkins diesel question 4.154 in 45' Roberts Ketch

I just picked up this 45' Bruce Roberts Ketch. The Perkins 4.154 had someone go through it who did not put things back together (nice way of putting it). Question I have is, It is a mechanical engine so If I spray starting fluid (quick burst) into the intake and turn it over at the starter she should be able to hit (fire off, even only for a second) correct? The sensors and or electrical safeguards should be bypassed as they only stop fuel?

The fuel system hoses had stripped fittings at the fuel filter housing (engine mounted one) I have ordered the new housing but want to make sure she will fire once I get the new parts installed and bled out.

For those curious, I am hauling her shortly, repainting top to bottom and refitting new teak rub rails. Looking forward to having her in pristine condition again.







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Old 01-25-2019, 06:58 PM
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Yes it should fire . Be very careful. When you think you sprayed too little and can still be too much. Fire extinguisher at hand due to confined space
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Old 01-25-2019, 07:00 PM
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Absolutely, that was the first thing I grabbed when I tried the first time. Shes turning over slowly so I have left her on the charger and will try again tomorrow.

Thanks for the quick response.
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Old 01-25-2019, 07:02 PM
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Dont do it. Ether doesn't belong with diesel motor. Wait for your part, install it, prime the fuel system properly, hook up glow plugs and warm them up, and then try to start it. I can understand you are anxious to motor away into the sunset, but don't do it.
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Old 01-25-2019, 07:35 PM
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Don’t do it! You can very easily break rings with starting fluid/either. Fix it first.
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Old 01-25-2019, 07:44 PM
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You guys do realize ether injection was standard on many pieces of heavy equipment. Jd, Ford, Perkins, Cat, Komatsu, all had it. I’ve Had a few diesels 100’s most have been shot a few time in the winter for start ups in the field. There was a can behind every seat, never damaged an engine. Just don’t get crazy.
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Old 01-25-2019, 08:18 PM
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Darn !!!, I was not aware snail boats were allowed on THT.
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Old 01-25-2019, 08:23 PM
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ha, well I have enough Power boats to get by.

58' bertram sporty
46 post marine sporty
31 stamas
25 wellcraft walk around

why not go slow once in a while
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Old 01-25-2019, 08:30 PM
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Don’t listen to these THT fish heads , I like sail boats
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Old 01-25-2019, 08:38 PM
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Don't spray it. Put some gas on a rag and put it over the intake while cranking. Yes, i am aware of zero start systems that use ether to start cold diesels. Gasoline vapors are not as violent
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Old 01-25-2019, 08:42 PM
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Instead of ether, use WD40. It is less volatile. I've used it to start small Yamars on hunter sail boats.
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Old 01-25-2019, 08:53 PM
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In case you don't have it, here's a link for the engine manual.

http://r.search.yahoo.com/_ylt=AwrE1...BtPhPHfcwEwiU-
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Old 01-26-2019, 08:12 PM
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Make sure it is in neutral and push the throttle all the way ahead crank the motor and sprayed WD-40 into the air intake. Spray as needed to run motor. I always did this to get air out after filter changes ect.
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Old 01-26-2019, 08:51 PM
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If the valves are remotely close on timing then yes it should at least cough on ether if you are cranking it via the starter. If you are barring it over with a wrench then no.

Mechanical diesels need fuel to the injectors, air intake and exhaust, and comoression. One in good condition should require air or fuel supply to be removed for it to stop running.
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Old 01-26-2019, 10:12 PM
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That’s a tough little engine. Give her a very short spray and crank her
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Old 01-27-2019, 03:55 AM
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It is not really clear what you are trying to accomplish by starting up the motor in the condition you describe. It is more likely to do harm than good. I would go ahead and fix everything that is obviously not in good order such as the fuel lines and filter setup, check the sea water pump and impeller and strainer (if there is one), air filter, change engine and reverse gear oil and filters and so on. Then bleed the air from the fuel system and crank her over. At that point if you cannot get the engine started, a squirt of some volatile compound as starting fluid might be worth a try. It should not be necessary unless it is very cold and you want an auxiliary that starts when you turn the ignition, not one that barely cranks with starting fluid.
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