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Author Topic: LPW3 Genset  (Read 1071 times)

wolfmt

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LPW3 Genset
« on: November 01, 2017, 12:25:07 PM »
Help!!
So I bought this unit ant it ran fine.
put on trailer and moved it up a mountain and it wont start.
Fuel filter changed and bled for air.
Oil and fuel present
spins over like it should but it will not fire.
fuel shutoff solenoid works as it should

Thanks

AdeV

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Re: LPW3 Genset
« Reply #1 on: November 01, 2017, 01:15:41 PM »
Are you getting white smoke?
Cheers!
Ade.
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dieselgman

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Re: LPW3 Genset
« Reply #2 on: November 01, 2017, 06:13:20 PM »
A little more information required... history of machine, how many hours on it. How was it starting and running at last location?

Fuel delivery is the first thing to confirm, then compression and air. You should be seeing smoke or vapors in the exhaust ports.

These direct injected units can be fussy about compression and they carbon up inside fairly easily if run without loading. This can be disturbed in transit and cause exhaust valves to not seat fully.

dieselgman
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glort

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Re: LPW3 Genset
« Reply #3 on: November 02, 2017, 02:30:27 AM »
This can be disturbed in transit and cause exhaust valves to not seat fully.


That's something I would have never thought of in a million years!

Another one I would have never thought of......
Bought a tiller with one of those POS briggs motors.  Once I cleaned the carb, The easiest pull to get the 8 Hp engine turning over would have it fire into life. Beautiful!

I had been pull starting it although it had electric but no battery. I bought another jump starter off flea bay and thought I'd give the pack and the electric starter a test. Bad move as it turned out.  It started on the electric but wouldn't rev and was blowing blueg flames out the exhaust and the muffler is glowing like an oxy was on it. After a few starts and pulling things apart and refitting, it got worse to the point it wouldn't start or run at all. 

Culprit turned out to be the thing had sheared the flywheel key and timing was off.  Luckily found that on the net because although I thought it was a symptom of timing, I couldn't see how it would be out never thinking of the flywheel key shearing and the flywheel moving.
Put another one in and it sheared that but now I'm having a lot of trouble getting the flywheel off.  Need to get suitable bolts for my puller. Once it's off I have to lap the flywheel to the crankshaft to restore the taper fit.

Might take the electric starter off as well so I'm never tempted to use it again.

EdDee

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Re: LPW3 Genset
« Reply #4 on: November 02, 2017, 05:52:27 AM »
Hey Glort,

Had that a few times before, mostly on hydro-locked outboard motors.... The land based ones almost always came down to being caused by removal/refitting of the flywheel on the crank with a bit of grit thrown in for extra fun on the taper by the local "engine doctors" 99% of the time, remove, clean up scarring, if any with fine emery cloth and refit after washing ALL crap off with "petroleum acid" (RUG) or benzine, torque to spec and Bob's your auntie!!

All good after that.... Never had to lap a taper in as yet (Excepting of course, newly made and not so well fitting replacement parts, but CI, not Al ones....)

Cheers
Ed
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wolfmt

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Re: LPW3 Genset
« Reply #5 on: December 15, 2017, 11:26:02 PM »
So I loaded up the genset and took it home..
Didn't start still
Gave it a shot one day of WD40 and it fired right up
Problem solved..... WRONG
It just happened to be warm for a few days
So I took the heat gun to unit and it fired up yesterday
So how do I test Glow plug circuit? I think there is a jumper wire on relay that wasn't there originally
does this unit only have one glow plug in intake?

not really sure of age or hours on this unit
It is a HawkPower 3 cylinder Genset maybe 10kw?

Thanks for the addition to group

dieselgman

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Re: LPW3 Genset
« Reply #6 on: December 16, 2017, 12:35:12 AM »
Different units have differing pre-heat arrangements. Most of the civilian LPW3 direct injection engines have single pre-heat elements in the intake manifold. Cold temps, low compression, retarded injection timing, all can cause them to be difficult to start. The WD40 spray and the heat gun are both acceptable starting aids. Put a meter on your heater plug and see if it is energized when you call for pre-heat. Those plugs do burn out easily enough. Relays also can easily fail.

dieselgman
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wolfmt

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Re: LPW3 Genset
« Reply #7 on: December 22, 2017, 09:22:50 PM »
Single pre-heat unit in intake