starting getting worse on 3b--from oil burn

[haryv]

I have probebly mentioned this before but as the weather gets colder say close to 0C My engine has a much harder time starting smoothly. It is a very rough start to burn alot oil for 20 seconds. I also think this hard engine shake has possible busted the rear exaust hanger.

If I plug in the engine heater over night, the engine idle is alot smoother. As a result the oil burn after start is minimal.

Question I have is this problem c this oil that is seeping past the valve stems into the cylinders over night as I would suspect?

Is the very rough idle caused by oil comtamination of the glow plugs thus preventing them from glowing after the engine starts?

My guess is after the oil is burned off in one or more cylinders then the glow plugs would contine to run. Come to think about it, when the glow plug light goes out, does that nessesarly mean thay are still glowing after engine start and for how long?

If its a valve stem oil seal problem would it be safe to run the ofending cylinder piston to #1 tdc put a supply of air into the cylinder then remove the rocker arms and slide off the valve stem seals? I am asuming thay are under the valve cover like most engines.

Is there something that can also hold the valve in place in the event it drops into the cylinder?? Last thing I want to do is remove the cylinder head.

Thanks

 

[lowenbrau]

It's unburnt fuel you see, not oil. It's normal but you might as well check your glowplugs to make sure they are all in good working order.

 

[shinny]

When ever it's below 0C, I let it glow for two full cycles. You have to listen for the relay to click off - takes something like two minutes. Doing this, it always starts just fine. Not doing this gives a crappy start with a big white cloud. Let it glow, let it glow, let it glow.
I think what you're seeing is pretty normal. Anyone?

 

[haryv]

this is blue smoke with white.

I failed to mention in my post that this engine consumed about a quart every 500km. This is white smoke with lots of blue mixed in. I might also inspect the glow plugs.

If this is unburn fuel does that mean the injectors are leaking into the cylinders over night?

Shinny, so in a case like this how long should I wait before starting the engine after the glow plug lights are out?

 

[lowenbrau]

I failed to mention in my post that this engine consumed about a quart every 500km.

OOh

Rebuild time. The unburnt fuel thing gets worse with age. Once your compression is below 350 all the glowplugs in the world won't help that. It gets better once its warm which is why your's starts better if it's plugged in. I'd do a compression check and see where you are at. I've never heard of a 3B with that kind of oil consumption. Find the problem quick before it becomes unbuildable.

 

[brownbear]

Agreed do the compression test pronto.....its your base line. I know its info you might not want to know. But it will help you decide what to do next.

Unburnt fuel on start up is normal, especially if one or more glow plugs are not getting hot.

Glowplugs should be inspected or replaced every couple years. I think changing from the toyota automatic glowplug cycle to manual is much better. Than you can glow it longer.

Call Sheldon at G&S cruiser parts. See if he can do a compression test for you. Or examine the engine. They are the engine guys in your neck of the woods.

Your oil consumption is concerning.

 

[Greg_B]

Call Sheldon at G&S cruiser parts. See if he can do a compression test for you. Or examine the engine. They are the engine guys in your neck of the woods.

Thanks for the props BB, however we do not work retail on vehicles or engines. Rob Millson of LCI in Richmond, or Ciaran Wilson of Cruiserland in Langley would be the two obvious choices...

Both have had contact info posted on Mud.

hth's

gb

 

[brownbear]

Okay, thought I would try

I had good service with Rob M. when I did my fuel nozzles.

As Haryv mentioned before he has talked with him already.