1HD-FTE smokes on startup and running rough (1 Viewer)

[Jim_Phillips]

I recently bought a 2003 LC 100 with a 1HD-FTE engine.

It has done 93,000 miles and has a partial service history - all the main service stamps from Toyota are in the service book but it is missing the intermediate (4500 mile) service stamps. One owner had it for the first 7 years and I suspect they will have done the intermediate service themselves. It seems to have been looked after – a lot of money spent on a custom made stainless exhaust and the timing belt replaced on time etc..
There are a few issues with the truck which occur when starting in the morning.
The engine starts on the turn of the key but is accompanied by a big puff of blue smoke. Not just a slight puff – I mean a cloud of the stuff. .. After a couple of seconds the exhaust is clear.
I have searched the forum and from what I've read this could be indicative of worn valve stem seals. My question is whether this is likely given that the truck has (supposedly) done only 93,000 miles. Could there be any other causes of the smoke? PCV valve keeps coming up in searches on the subject and I’ve seen the problem attributed to an injection pump diaphragm. Any ideas and suggestions would be appreciated before I spend money of the valve seals.

The second problem with the engine is that when starting from cold (12 degrees in the morning here) the engine doesn't idle very well. It tends to run a bit rough - it sounds a bit clattery and the revs are not constant. It seems to lurch. Once the engine is warm, it runs fine..

Do these symptoms point to anything obvious? I would like to get it running nicely and don't want to spend lots of money on the wrong diagnosis...
Any suggestions gratefully received. cheers.. Jim

 

[roscoFJ73]

Is the glow screen working?
I would get it compression tested and once that is sorted,start looking at the pump.
To be honest ,I cant see this being something simple and cheap.
I have suggested worn valve stem seals in the past,but the more I look,it seems they dont suffer this problem.
At least I cant point to an actual case.

Is there a diaphragm in these pumps apart from one in the HAC?

 

[Jim_Phillips]

I wondered about the glow screen.ill get it tested along with the compression - It only smokes on first starting - thereafter there's no sign of smoke. Would it smoke every time if it was the glow screen?

i should also mention that there's quite a lot of soot which builds up at the end of the exhaust pipe - might this be connected?

Cheers, Jim

 

[hybric4x4diesel]

hi jim, i suppose you check the ip timing (advance a little bit ) & see what happen.i did one before & that solve it.late timing can cause unburn fuel (bluewish) look as if it is burning m-oil through valve seals.the 1ht-fte don`t have diagham.itis electronic VE pump.

 

[Jim_Phillips]

Thanks for the tip - I'll read up on advancing the timing... would be great if it was a simple fix .. Cheers

 

[roscoFJ73]

I wondered about the glow screen.ill get it tested along with the compression - It only smokes on first starting - thereafter there's no sign of smoke.

This is normal even if there is a mild problem.A little bit of warmth in the engine can hide various problems

Would it smoke every time if it was the glow screen?

I dont think so,as I mentioned before ,once warmed up they dont smoke until the engine has cooled completely overnight

i should also mention that there's quite a lot of soot which builds up at the end of the exhaust pipe - might this be connected?

Cheers, Jim

I say its a good chance.

As someone mentioned ,check the alignment marks for the pump. I would also check the timing belt marks to rule that out.

Air in the fuel lines can also make smoke on start up and it will go away until the next cold start when enough air has accumalated again to make it run bad.
But usually air gives you whitesh grey smoke. You could check the fuel line fittings to and from the fuel pump or even replace the clamps with better ones.

 

[eleblanc]

12 deg C of F?

Mine runs really rough for about a minute in the cold but i mean minus 15 deg C.

I recently bought a 2003 LC 100 with a 1HD-FTE engine.

It has done 93,000 miles and has a partial service history - all the main service stamps from Toyota are in the service book but it is missing the intermediate (4500 mile) service stamps. One owner had it for the first 7 years and I suspect they will have done the intermediate service themselves. It seems to have been looked after – a lot of money spent on a custom made stainless exhaust and the timing belt replaced on time etc..
There are a few issues with the truck which occur when starting in the morning.
The engine starts on the turn of the key but is accompanied by a big puff of blue smoke. Not just a slight puff – I mean a cloud of the stuff. .. After a couple of seconds the exhaust is clear.
I have searched the forum and from what I've read this could be indicative of worn valve stem seals. My question is whether this is likely given that the truck has (supposedly) done only 93,000 miles. Could there be any other causes of the smoke? PCV valve keeps coming up in searches on the subject and I’ve seen the problem attributed to an injection pump diaphragm. Any ideas and suggestions would be appreciated before I spend money of the valve seals.

The second problem with the engine is that when starting from cold (12 degrees in the morning here) the engine doesn't idle very well. It tends to run a bit rough - it sounds a bit clattery and the revs are not constant. It seems to lurch. Once the engine is warm, it runs fine..

Do these symptoms point to anything obvious? I would like to get it running nicely and don't want to spend lots of money on the wrong diagnosis...
Any suggestions gratefully received. cheers.. Jim

 

[eleblanc]

CAn you change timing on those pumps? they are electronic?

 

[roscoFJ73]

CAn you change timing on those pumps? they are electronic?

I would imagine they would still have the alignment marks on the pump flange for installation purposes.
I also think the pump would have to be in approx the correct positon so it could advance or retard within in its ideal parameters.
They also dont have an ACSD,as they can electronically advance the pump by altering the position of the cam ring.

There is some info on here about the Bosch VP44 pump which is generically the same as the E pumps found on Toyota diesels.
The VW Golf guys are way ahead of us in understanding how our pumps work.


http://www.turbodieselregister.com/forums/1052590-post24.html

 

[Jim_Phillips]

I've taken a look at the pump and the alignment marks are all there and it seems to be in the right position. I think it is time to take it to a diesel engine specialist. I'll post up what they decide. Thanks for the input so far. I appreciate it.

 

[eleblanc]

You should at least go to toyota and have them read ECU codes you have.

 

[Dougal]

CAn you change timing on those pumps? they are electronic?

The timing is dynamic within the pump. You could possibly rotate the pump to account for wear in the drive-train. But the 100 series here with the 1HD-FTE has more km on it and doesn't exhibit any signs of retarded timing. It's not like it has a complex gear-train which can wear and lose advance.

I'd look at the breather, it's a good source of oil for blue smoke. There was a recall for these early on about wiring, it was cold start related and may have been glow screen. Is there any way to check?

 

[Jim_Phillips]

Thanks Dougal... I'll. Check the breather and research the recall..

 

[Jim_Phillips]

The breather is fine.

I noticed a small oil weep where the large rubber hose connects to the Intake heater. I disconnected the hose (which wasn't very tight) and there was oil inside the pipe. I don't know where the intake heater draws air from and have no idea how oil can be entering the air pipe. It seems like this may explain the blue smoke (im assuming if oil is in the air intake then it will make its way to the cylinders and produce blue smoke) but where could the oil getting,in? Hmmmmm

I disconnected the engine breather and noticed that there is a build up of pressure (when I put my finger on the pipe connector and then released it I could hear the air escaping. Could this be forcing oil into the air supply?

 

[roscoFJ73]

The breather is fine.

I noticed a small oil weep where the large rubber hose connects to the Intake heater. I disconnected the hose (which wasn't very tight) and there was oil inside the pipe. I don't know where the intake heater draws air from and have no idea how oil can be entering the air pipe. It seems like this may explain the blue smoke (im assuming if oil is in the air intake then it will make its way to the cylinders and produce blue smoke) but where could the oil getting,in? Hmmmmm

I disconnected the engine breather and noticed that there is a build up of pressure (when I put my finger on the pipe connector and then released it I could hear the air escaping. Could this be forcing oil into the air supply?

Yes and yes ,some oil and some pressure is normal.
Even with good rings,some pressure slips past them and builds pressure in the crankcase which is recycled back into the air intake.
Its all a case of how much pressure there is.