Isuzu engine stop solenoid

[stuart]

My Isuzu 4LB1 (35hp) engine has recently stopped "stopping" !!

 

Thought it was a faulty stop switch but turns out the solenoid had seized. I've managed to get it running again with plenty of WD40 and a few taps of a hammer !

 

If it goes again soon then I'm going to have to replace it. The Isuzu dealers (Alvechurch) want £177 +VAT for a new one - ouch!!

 

 

The original part is made by Hitachi and has "MV1" on it - its a bit smaller than a coke can.

 

Any alternatives/similar makes that fit?

[nb Innisfree]

You could replace with a manual stop, that's what I did on our L/Petter.

[stuart]

Yeah, that did cross my mind however it would be easier to keep things as they are.

[paulcatchpole]

My Isuzu 4LB1 (35hp) engine has recently stopped "stopping" !!

 

Thought it was a faulty stop switch but turns out the solenoid had seized. I've managed to get it running again with plenty of WD40 and a few taps of a hammer !

 

If it goes again soon then I'm going to have to replace it. The Isuzu dealers (Alvechurch) want £177 +VAT for a new one - ouch!!

 

 

The original part is made by Hitachi and has "MV1" on it - its a bit smaller than a coke can.

 

Any alternatives/similar makes that fit?

 

Anything useful on this Ebay advert?

 

http://cgi.ebay.co.uk/Stop-Solenoids-For-m...id=p3286.c0.m14

 

This sort of thing?

 

 

PC

[RLWP]

How about here: link

 

Richard

[NB Alnwick]

How about here: link

 

Richard

 

I am not sure what the 'stop solenoid' actually does. The only sure way to stop a proper diesel engine is to cut off it supply of fuel and, in my book, a simple manual system is bound to be more reliable than anything electrical - after all when you need it, you need it to work first time without fail!

[Guest User]

I am not sure what the 'stop solenoid' actually does. The only sure way to stop a proper diesel engine is to cut off it supply of fuel and, in my book, a simple manual system is bound to be more reliable than anything electrical - after all when you need it, you need it to work first time without fail!

 

... bent control rod on a manual stop gave problems once ... solenoids are a fly-by-wire means of cutting off the fuel, little solenoid-activated plunger IIRC, if a road vehicle equivalent can be found I'd be off the the nearest independant motor spares factors for a replacement (not the main dealers ! )

[stuart]

Thanks for the replies folks, still looking though as none of them are very similar to what I have on the Isuzu.

 

I'll try and get some pictures.

[nb Innisfree]

I am not sure what the 'stop solenoid' actually does. The only sure way to stop a proper diesel engine is to cut off it supply of fuel and, in my book, a simple manual system is bound to be more reliable than anything electrical - after all when you need it, you need it to work first time without fail!

 

Ours was a fail safe i.e. solenoid energises to switch fuel on. I assume they are all the same

[Smelly]

Thanks for the replies folks, still looking though as none of them are very similar to what I have on the Isuzu.

 

I'll try and get some pictures.

 

Isn't there a manual stop on your injector pump? There is on ours... It looks like a handle with a hole at the top. When our stop switch started playing up we just used the manual stop until the nice chappie fixed it.

[gazza]

I am not sure what the 'stop solenoid' actually does. The only sure way to stop a proper diesel engine is to cut off it supply of fuel and, in my book, a simple manual system is bound to be more reliable than anything electrical - after all when you need it, you need it to work first time without fail!

 

 

 

 

they have been in use on ford 1.6/1.8 diesels (and many many others) since 1984, i had one that had done 220k miles, the stop solenoid was changed once. normally very reliable, but when it does pack up they are cheap to replace, unless you use it in a marine application.....

 

 

get you home trick with a road going vehicle is to remove solenoid and throw away plunger, refit and stall to stop. bit harder on a boat though

 

 

 

 

edited to add, they do indeed cut of the fuel supply, just like proper diesels

Edited September 28, 2009 by gazza

[RLWP]

they have been in use on ford 1.6/1.8 diesels (and many many others) since 1984, i had one that had done 220k miles, the stop solenoid was changed once. normally very reliable, but when it does pack up they are cheap to replace, unless you use it in a marine application.....

 

 

get you home trick with a road going vehicle is to remove solenoid and throw away plunger, refit and stall to stop. bit harder on a boat though

 

 

 

 

edited to add, they do indeed cut of the fuel supply, just like proper diesels

 

The Peugeot 205 that I used to own had such a solenoid in the fuel pump, but it wasn't as big as described earlier. I don't know if a solenoid nearly as big as a coke can actually works on a mechanical shut off.

 

Richard

[mayalld]

Ours was a fail safe i.e. solenoid energises to switch fuel on. I assume they are all the same

 

No.

 

Several years ago, we were moored at Fools Nook on the Macc, and a hire boater pulled up, tied up, and kept the engine running.

 

After 15 minutes, they came over and asked if we could help as they couldn't stop the engine.

 

Sure enough the engine stop didn't work, and after scratching my head for a few minutes I saw the problem.

 

They had turned off the ignition before operating the stop button, so there was no power to the stop solenoid. Turned the ignition back on, and the stop button worked.

 

Given that engine stop on ours works by turning the key anti-clock from "off", I believe that it must be energise to stop (otherwise the solenoid would be energised when the key is in the "off" position)

[Sir Nibble]

Small solenoid fitted in fuel pump. Unlikely 'cos that's energised to run and marine engines should not stop 'cos a fuse blows. External solenoid energised to pull the stop lever, much more likely and sold in a variety of forms by CARGO.

[stuart]

Correct, on the Isuzu engine, the solenoid is energised to stop engine.

 

I've been using the manual engine stop lever for a few weeks now - works fine but a pain to keep lifting deck boards on a cruiser stern.

 

 

Still havent found a cheaper supplier (yet)!

[Semitrad]

On my engine, turning the ignition to "off" energises the stop solenoid, it is held in this position for several seconds then returns to normal. I assume there is a relay fitted otherwise it would cycle continuously.

[meerlaan]

Did you manage to source an Isuzu stop solonoid ? mine has gone

[WotEver]

After 7 years I think he'll have used a lot of fuel by now if he hasn't

[blackrose]

You could replace with a manual stop, that's what I did on our L/Petter.

That's what I did too on my Isuzu. The solenoid still works but I got a bit of a shock once when a wire in the back of the panel came loose and the engine wouldn't stop. I installed a "pull to stop" cable so if the solenoid ever really stops working I can still stop the engine quickly without having to get the deckboards up. Could be useful in an emergency, although for a runaway engine the only thing that stops it is smothering the air intake.

Edited November 15, 2016 by blackrose

[meerlaan]

Haha yes lots of fuel !! didnt notice it was quite that long ago !

[meerlaan]

Seriously spoke to a isuzu dealer today who said a new solenoid was £404 !! Anyone able to shed any light on this matter, this seems outrageous for a stop switch... any advice much apreciated. Thanks

[Taslim]

Seriously spoke to a isuzu dealer today who said a new solenoid was £404 !! Anyone able to shed any light on this matter, this seems outrageous for a stop switch... any advice much apreciated. Thanks

That looks like a mistake or a pisstake.

 

Try forktruck firms. Some trucks have similar bace engines and some firms have salvaged parts.

[Sea Dog]

Seriously spoke to a isuzu dealer today who said a new solenoid was £404 !! Anyone able to shed any light on this matter, this seems outrageous for a stop switch... any advice much apreciated. Thanks

It certainly would be outrageous for a stop switch, but that's not what a solenoid is. I don't think it's cheap for a solenoid either, but its only really fair to compare against similar units from other manufacturers.

[raymondh]

http://www.ebay.co.uk/itm/MV1-70-Shutoff-Solenoid-Switch-897183-0140-for-Hitachi-isuzu-engine-12V-/172043358712?hash=item280e9551f8:g:jdAAAOSw3KFWgK8k

 

Not hard to find lots out there

 

Ray

[meerlaan]

I did call 3 Isuzu marine dealers and they all gave insane prices !! I then tried someone on ebay who had a isuzu solonoid but they said it was only for trucks ! does anyone have experience to confirm another solonoid would work ??