Author Topic: Smoke billowing out of intake.  (Read 259 times)

LR1MICK

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Smoke billowing out of intake.
« on: March 22, 2019, 03:55:00 PM »
Hello

Got the LR1 out today and decided to giver her a run, however it started kicking backwards and when she did start billowed blacksmoke out the air filter?? So i shut it down.

It is a conventional clockwise rotation engine.

Why has this happened?
« Last Edit: March 22, 2019, 03:56:46 PM by LR1MICK »

dieselspanner

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Re: Smoke billowing out of intake.
« Reply #1 on: March 22, 2019, 05:07:23 PM »
The short answer is probably 'timing'

the longer one is that when it hit the compression stroke it bounced back just after the injector popped, when it went all the way around, almost two revolutions to the compression stroke from the other side it fired, passed TDC and continued to run.

The injector would have popped, albeit in the wrong position and the sequence repeated it's self.

Without a lot of thought, for which I don't have time, 'cos I'm off up the pub in a few minuets, there's probably less charge air when the motor runs backwards, leading to an overfueling situation, hence the black smoke.

Check the timing, and if that's ok crank harder to get it past TDC in the correct direction!

Cheers
Stef
Tighten 'til it strips, weld nut to chassis, peen stud, adjust with angle grinder.

LR1MICK

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Re: Smoke billowing out of intake.
« Reply #2 on: March 22, 2019, 05:30:19 PM »
Cheers Stef i will check the timing as i havent disturbed that. Its never done this before!

Cheers

ajaffa1

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Re: Smoke billowing out of intake.
« Reply #3 on: March 22, 2019, 11:07:32 PM »
I agree with what Stef said. The only other thing I can think of is the decompressor lever needs adjusting if it is not opening the exhaust valve during cranking, alternatively you might have a build up of oil or other fluid in the cylinder, this would increase the compression to the point where you could not swing it passed TDC. Now that it has fired (all be it backwards) that problem should have cleared itself.

Let us know how you go.

Bob

glort

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Re: Smoke billowing out of intake.
« Reply #4 on: March 23, 2019, 04:05:55 AM »

Without a lot of thought, for which I don't have time, 'cos I'm off up the pub in a few minuets,

I have seen pictures of your house and shed and where you live. I can only Imagine what the pub and the village looks like.


I have had my China engines kick and run backwards as well. Bit scary and destroys the air filter so that will probably need to be replaced if it's a paper/ foam type.

Some of the old engines particularly the Semi Diesel/ Hotbulbs could run either way and even change direction mid run with the right operator.


ajaffa1

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Re: Smoke billowing out of intake.
« Reply #6 on: March 23, 2019, 10:15:21 AM »
Wow Seff, what a great looking place to go for a couple of beers. I used to love to ski and would spend 10,000 per year going from resort to resort looking for places exactly like that. You have no idea how lucky you are to live in the mountains, away from the heat and pollution. I am hoping that my doctor will allow me to go to New Zealand this winter, hell I miss the snow!

Bob

LR1MICK

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Re: Smoke billowing out of intake.
« Reply #7 on: March 23, 2019, 10:17:26 AM »
Thanks for your comments chaps. Thankfully its a oil bath air filter so its not too badly soiled. I have heard a loose injection pump clamp may give similar trouble?? I will check it. Cheers
« Last Edit: March 23, 2019, 10:19:22 AM by LR1MICK »

LR1MICK

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Re: Smoke billowing out of intake.
« Reply #8 on: March 23, 2019, 11:24:55 AM »
All sorted now running fine thanks chaps

glort

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Re: Smoke billowing out of intake.
« Reply #9 on: March 23, 2019, 11:25:14 AM »


I am hoping that my doctor will allow me to go to New Zealand this winter, hell I miss the snow!

Bob

Yeah Bugger Nz Bob, been there enough already.  Probably be asked to go back again this year. Not sure I could be bothered. Although there was that one  model there I would really love to work with gain and am kinda missing....

I suggest we have the First annual Lister engine and Microcogen sites international Convention and pissup in France where Stef is.
As nice as NZ is, I think that looks a  very unique place I would love to see.
We need to put some environmental / Climate change spin on it because Gubbermints around the world are handing out billions to all sorts of Hairbrained  ideas so we could say it's to discuss measures to reduce c02 emissions using renewable fuels and we should be able to cover everyones flights, booze, food and booze.

Lets start getting this organized. Bruce, can you make it? wouldn't be the same without you,  Ed will need to bring his entire wardrobe to put on all at once and so will Casey given their normally warmer temps.  Hopefully we can get a good roll up with everyone there!

How many beds and Lounges at your place Stef??  Promise we won't be a Burden.  Fortnight and we'll be right on out of there.  :laugh:


ajaffa1

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Re: Smoke billowing out of intake.
« Reply #10 on: March 23, 2019, 12:39:43 PM »
France it is then. Sorry Stef looks like we are going to come and pollute your part of the world. I`ve skied in Andorra, which is between where Stef lives and Spain, a very beautiful part of the world regardless of the season, it`s also duty free so a bottle of your favorite tipple will be very cheap.

Funding shouldn`t be a problem, I remember the UK arts council giving a sizable grant to three art students to carry a railway sleeper around Wales, if I remember rightly they stipulated that the sleeper had to be painted yellow, although I have no idea why.

Another similar grant was given to the East Anglia mountain rescue team. (There are no mountains in East Anglia, there aren`t even any hills!)

Perhaps if we declared ourselves to be a persecuted minority group (internal combustion advocates) we could get funding to protect us from the environmental lobby. If we declared ourselves to be ethnically diverse and gender questionable, government agencies should be falling over themselves to give us money. Sadly we are a bit short of athletes, the Olympic committee has an almost unlimited budget when it comes to providing training camps in unlikely places. If we fill in an application claiming to be a transgender bunch of persecuted Aboriginal rev heads with a desire to participate in the Olympics we should be fine.

As a Pommie I could easily get myself deported back to the UK. From Heathrow it`s only a two hour flight to Toulouse, from there it`s only about a four hour drive.

Sounds good to me guys, I`m in.

Bob

dax021

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Re: Smoke billowing out of intake.
« Reply #11 on: March 23, 2019, 01:51:34 PM »
Ja, I'm in.  Ed and I could apply for refugee status, being a persecuted minority here down south on the other continent

BruceM

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Re: Smoke billowing out of intake.
« Reply #12 on: March 23, 2019, 04:02:16 PM »
Alas, I've been pretty much homebound for 20 yrs. Blown away today from 3 trips to the hospital for I-131 thyroid scan the last two day, in preparation for nuking what's left of it.  Then hope that I don't have a replay of runaway epilepsy from thyroid medication, which I think I can avoid thanks to Grossman Cynomel, which I seem to tolerate.


Willw

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Re: Smoke billowing out of intake.
« Reply #13 on: March 23, 2019, 04:58:35 PM »
LR1MICK: were you able to determine what caused the engine to run backwards?
I had a similar problem but did not come to a real conclusion as to why it was happening.

LR1MICK

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Re: Smoke billowing out of intake.
« Reply #14 on: March 23, 2019, 05:17:33 PM »
Im not 100% sure why this happened, i gave everything a once over, put some more diesel in and away it went?? I think the hot compressed air in the cylinder must have pushed the piston back down as i stopped cranking and ignited the fuel that was injected. I will try to avoid stopping cranking over tdc in future haha