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Search took 0.00 seconds. Search: Posts Made By: Wotname
Forum: Engines and Propulsion Systems 05-05-2024, 21:23
Replies: 272
Views: 18,655
Posted By Wotname
Re: Engine seems to start but rolls to a stop

Regarding setting the valve lash - we are all assuming the cam followers are actually following the cam lobes and for 99.99999% of the time, this is a reasonable assumption. With this engine, we...
Forum: Engines and Propulsion Systems 05-05-2024, 21:11
Replies: 272
Views: 18,655
Posted By Wotname
Re: Engine seems to start but rolls to a stop

Don't beat yourself up; it is a learning curve and we all started somewhere.
Forum: Engines and Propulsion Systems 05-05-2024, 21:07
Replies: 272
Views: 18,655
Posted By Wotname
Re: Engine seems to start but rolls to a stop

This is turning into one of CF's better engine mysteries - where is Agatha Christie or Sherlock when you need them. I keep thinking I must have missed some early clue but everytime I re-read the...
Forum: Engines and Propulsion Systems 05-05-2024, 07:02
Replies: 272
Views: 18,655
Posted By Wotname
Re: Engine seems to start but rolls to a stop

All good questions. Obviously the best option is to measure the compression but I'm assuming JustinT does not have access to a compression gauge or even a ready source to buy one.

If it was me, I...
Forum: Engines and Propulsion Systems 05-05-2024, 06:36
Replies: 272
Views: 18,655
Posted By Wotname
Re: Engine seems to start but rolls to a stop

Well you are on the spot and are in the best place to know how it sounds. My previous analysis has been based on what I understood the engine has operated a few times for some seconds after the key...
Forum: Engines and Propulsion Systems 05-05-2024, 06:18
Replies: 272
Views: 18,655
Posted By Wotname
Re: Engine seems to start but rolls to a stop

Yes, that does make it a little more difficult. What sort of fitting is used at the inlet side of the lift pump (see attachment)? The manual I have suggests it is a banjo fitting with a hose nipple....
Forum: Engines and Propulsion Systems 05-05-2024, 06:06
Replies: 272
Views: 18,655
Posted By Wotname
Re: Engine seems to start but rolls to a stop

OK, a couple of days back, the engine appeared to run OK for a some seconds after the key was turned off. Or have I missed something in this video?
Forum: Engines and Propulsion Systems 05-05-2024, 02:44
Replies: 272
Views: 18,655
Posted By Wotname
Re: Engine seems to start but rolls to a stop

Providing there is some gap, it won't stop the engine from running (at no load) unless the gap was so big that the valve didn't move.
Forum: Engines and Propulsion Systems 04-05-2024, 17:39
Replies: 272
Views: 18,655
Posted By Wotname
Re: Engine seems to start but rolls to a stop

Once again - back to basics!

The engine does fire and run for a short period - intermittently.

So from the videos and data to date, the engine is getting ample air.

That only leaves...
Forum: Engines and Propulsion Systems 04-05-2024, 06:04
Replies: 272
Views: 18,655
Posted By Wotname
Re: Engine seems to start but rolls to a stop

Earlier the engine was getting fuel for a short while, now the engine is not getting fuel at all - simple as that.
It's late here so maybe more tomorrow if no else gets it sorted in the meantime.
Forum: Engines and Propulsion Systems 02-05-2024, 02:24
Replies: 272
Views: 18,655
Posted By Wotname
Re: Engine seems to start but rolls to a stop

^^ good luck with today's mission!
Looking forward to your next report.
Forum: Engines and Propulsion Systems 01-05-2024, 19:42
Replies: 272
Views: 18,655
Posted By Wotname
Re: Engine seems to start but rolls to a stop

Yes, you probably should but before that, please post a picture of the existing oil.

What colour is the oil on the dipstick?

a. almost clear (like new)
b. honey coloured
c. black
d. grey...
Forum: Engines and Propulsion Systems 01-05-2024, 18:55
Replies: 272
Views: 18,655
Posted By Wotname
Re: Engine seems to start but rolls to a stop

OK, back to basics.

On the positive side - you know a shipload more about the engine than you did last year. You have overcome a lack of mechanical knowledge by asking questions and are now...
Forum: Engines and Propulsion Systems 29-04-2024, 15:18
Replies: 272
Views: 18,655
Posted By Wotname
Re: Engine seems to start but rolls to a stop

Regarding copper washers for banjo fitting - if they look physically OK, then they only need to be annealed (i.e. made soft again) before refitting.

To anneal (soften), heat washer until they are...
Forum: Engines and Propulsion Systems 28-04-2024, 15:41
Replies: 272
Views: 18,655
Posted By Wotname
Re: Engine seems to start but rolls to a stop

Another guess :smile:

Some time long ago in the past when the engine was shut down, the exhaust valve in the dud position was fully open which means the cam follower was fully raised. It sat this...
Forum: Engines and Propulsion Systems 28-04-2024, 15:24
Replies: 272
Views: 18,655
Posted By Wotname
Re: Engine seems to start but rolls to a stop

My suggestion -

You have 3 valves/pushrod/cam followers working correctly and one that doesn't. My guess is the one that doesn't was also the one didn't work earlier (and had the bent pushrod).
...
Forum: Engines and Propulsion Systems 28-04-2024, 14:59
Replies: 272
Views: 18,655
Posted By Wotname
Re: Engine seems to start but rolls to a stop

Most likely 'stuck in the air'. More info soon!
Forum: Engines and Propulsion Systems 26-04-2024, 16:12
Replies: 272
Views: 18,655
Posted By Wotname
Re: Engine seems to start but rolls to a stop

FWIW, any half decent refrigeration tech, gas fitter and (some) plumbers could also make the pipe.
Forum: Engines and Propulsion Systems 13-04-2024, 04:32
Replies: 272
Views: 18,655
Posted By Wotname
Re: Engine seems to start but rolls to a stop

Good news about the pushrod.

There is a critical zinc rod mounted in cooling jacket of the crankcase. It needs replacing regularly; refer to page O-9 of the service manual for details.
Forum: Engines and Propulsion Systems 11-04-2024, 18:32
Replies: 272
Views: 18,655
Posted By Wotname
Re: Engine seems to start but rolls to a stop

I never thought of using a reground meat cleaver but it will soon be part of my toolbox now :thumb:.

To be honest, in my limited DIY experience, using compression has never worked for me but...
Forum: Engines and Propulsion Systems 11-04-2024, 15:46
Replies: 272
Views: 18,655
Posted By Wotname
Re: Engine seems to start but rolls to a stop

Good point about the wedge has to be thin. I overlooked that essential piece of advice. Thanks for highlighting it skipperpete.
Forum: Engines and Propulsion Systems 11-04-2024, 15:27
Replies: 272
Views: 18,655
Posted By Wotname
Re: Engine seems to start but rolls to a stop

Something is missing from the YT link, it isn't active!

There is nothing tricky about removing a DV20 head. Assuming you have followed the steps in C7 of the manual, it probably only needs a good...
Forum: Engines and Propulsion Systems 05-04-2024, 14:49
Replies: 272
Views: 18,655
Posted By Wotname
Re: Engine seems to start but rolls to a stop

You might be extremely lucky and find the valve spring is broken and that might be able to be replaced in situ but I strongly suggest you follow Growley's advice and remove the head. Take it home and...
Forum: Engines and Propulsion Systems 03-04-2024, 14:17
Replies: 272
Views: 18,655
Posted By Wotname
Re: Engine seems to start but rolls to a stop

Yep, never going to start while that exhaust valve is stuck open!

I suppose you could try freeing it with a tap of the hammer but I think you will end up having to remove the head (at least).
Forum: Engines and Propulsion Systems 02-04-2024, 15:14
Replies: 272
Views: 18,655
Posted By Wotname
Re: Engine seems to start but rolls to a stop

I've re-read all the posts - it seems clear to me that you have one cylinder working properly and one cylinder is not firing.

Last year you managed to get it to run for some minutes but never...
Showing results 1 to 25 of 32
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