Just broke down!

[Albannach]

Morning all, my truck just broke down on the motorway.

About 5 miles into my journey, the engine started vibrating (possibly dropped a cylinder) but it picked up again if I accelarated.

It lost power though, 65mph max. No smoke, no overheating, no abnormal noise. When I slowed down for a junction, it cut out and now won't restart. Changed the fuel filter to see if that's what it was. It wasn't. The truck tries to fire, but doesn't.

Anyone had this before? Save me some diagnostic time.

[stormforce]

don't suppose the timing belt slipped has it throwing the timing out or would that cause a rattle in the engine

[madcampbell]

are you using veg oil? at all

[Albannach]

don't suppose the timing belt slipped has it throwing the timing out or would that cause a rattle in the engine

Could be, but it didn't 'feel' like that.

[Albannach]

are you using veg oil? at all

Yes, 40% SVO.

[madcampbell]

I have had the power loss due to too higher ratio of veg oil on a cold day
and the none starting but they where unrelated (starter motor contacts)

Does sound like fuel starvation though but I guess you know that...

[Albannach]

I have had the power loss due to too higher ratio of veg oil on a cold day
and the none starting but they where unrelated (starter motor contacts)

Does sound like fuel starvation though but I guess you know that...

Yep, that's my thoughts. I'm hoping I've just choked an injector? Definitely not a starter issue, it turns over no problem.

Getting it recovered in a bit.

[madcampbell]

using veggie it could be the added pressure has caused the fuel pump to pack up ... has your been leaking at all?

Just a thought

[Albannach]

using veggie it could be the added pressure has caused the fuel pump to pack up ... has your been leaking at all?

Just a thought

It leaked about a year ago, replaced the seals and it's been OK since.

[Bibs]

Oooo sorry to hear that mate

[tintin]

Morning all, my truck just broke down on the motorway.

About 5 miles into my journey, the engine started vibrating (possibly dropped a cylinder) but it picked up again if I accelarated.

It lost power though, 65mph max. No smoke, no overheating, no abnormal noise. When I slowed down for a junction, it cut out and now won't restart. Changed the fuel filter to see if that's what it was. It wasn't. The truck tries to fire, but doesn't.

Anyone had this before? Save me some diagnostic time.

Best get a qualified mechanic to look at it !

[Bibs]

Best get a qualified mechanic to look at it !

Lol now see I showed self restraint in not mentioning the search button

[Albannach]

Best get a qualified mechanic to look at it !

I have.

[Albannach]

Lol now see I showed self restraint in not mentioning the search button

I did.

[Albannach]

Qualified mechanic looked at the truck. First thoughts were fuelling, so he tried all the usual things, new filter, filter by-pass, blow back to the tank, nothing.

Then he tried the ezi start, that was a revalation, what a noise! But still no go.

Tried turning the engine over and bleeding each injector, 1, 2 & 3, fuel at injector, no difference to engine when cracked. Number 4 however did make a difference, when it was cracked the engine slowed down on the starter. This is when he started thinking the head had gone.

Where he is now is, the front is off the engine and the timing checked and is spot on, so it's not that. When the engine is turned by hand, it turns very easily, too easy. 2 crank revs only produces one induction sooky noise. Again pointing to the head.

It's dark now, so he's gone for a shower. Tomorow evening, he's going to take the head off.

Unless anyone can suggest something else that may be amiss?