black smoke

[andy]

I cant get access to the web link you sent me. I have tried to register but cant get access. Can you help me ?

many thanx

You could try the TPS (throttle position sensor) the internal tracks can crack and cause the problems your having. Unplug the TPS and with an analog meter measure the resistance between the pins as listed. I am going from memory, as I can’t find where I wrote them down, I did email them to a member a while ago so maybe they can pass them on, but these will give you an idea. The main thing to look for is smooth needle movement when measuring between VTA-E2 and VCC-E2 while slowly opening the throttle if the meter needle spikes up or down then there’s a good chance of the TPS being faulty.

Closed TPS VTA-E2 200-800 ohms
Closed TPS IDL-E2 <2.3K ohms
Full open TPS VTA-E2 3.3k-8k
VCC-E2 4k-8k

[brian gillies]

[QUOTE=andy]You could try the TPS (throttle position sensor) the internal tracks can crack and cause the problems your having. Unplug the TPS and with an analog meter measure the resistance between the pins as listed. I am going from memory, as I can’t find where I wrote them down, I did email them to a member a while ago so maybe they can pass them on, but these will give you an idea. The main thing to look for is smooth needle movement when measuring between VTA-E2 and VCC-E2 while slowly opening the throttle if the meter needle spikes up or down then there’s a good chance of the TPS being faulty.

Closed TPS VTA-E2 200-800 ohms
Closed TPS IDL-E2 <2.3K ohms
Full open TPS VTA-E2 3.3k-8k
VCC-E2 4k-8k[/QU
I have put my surf in to toyota for diagnostics they came back with no faults. They did say that it sounded like one of two things.
1.THE FUEL PUMP
2.THE WRONG HEAD FITTED
Is there anything else i should try first before pulling it apart.

[Guest]

Think the wrong head might be a red herring, the heads that get supplied are the same head for the 2L, 2L2, 2LT and 2LTE.

I got to say that it neing a fault that comes on after a short time of driving points to something affected by it getting warm. I doubt that getting warm would cause loss of compression to a catastrophic extent enough to cuase that problem but an electrical problem either in the ECU or TPS could cause this. However how about checking to see if all the injectors and glowplugs are tight into the block. One may be slightly loose that seals enough OK when the engine is cold but leaks causing loss of compression when hot. This would explain the fast turnover when you have the problem and it being OK when you let the engine cool down. Just an idea and it could be totally wrong.

[brian gillies]

Think the wrong head might be a red herring, the heads that get supplied are the same head for the 2L, 2L2, 2LT and 2LTE.

I got to say that it neing a fault that comes on after a short time of driving points to something affected by it getting warm. I doubt that getting warm would cause loss of compression to a catastrophic extent enough to cuase that problem but an electrical problem either in the ECU or TPS could cause this. However how about checking to see if all the injectors and glowplugs are tight into the block. One may be slightly loose that seals enough OK when the engine is cold but leaks causing loss of compression when hot. This would explain the fast turnover when you have the problem and it being OK when you let the engine cool down. Just an idea and it could be totally wrong.

I now have 2 surfs in my driveway and have been changing parts over to see if i can find the problem. Here is a list of parts i have changed.
1. Coolant temp sensor.
2. ECU temp transmiter.
3. TPS (Throttle postion sensor)
4. ECU .
5.Checked glow plugs are tight.
6.Checked injectors are tight.
Nothing i have tried has made any difference.
Totally out of ideas.

[BUSHWHACKER]

Change the bodies over, that should cure it!

[foggy]

Check EGR valve is not stuck open

[brian gillies]

Check EGR valve is not stuck open

How do i check the EGR valve?
I have already changed it with another surf and it still runs the same.

[foggy]

How do i check the EGR valve?
I have already changed it with another surf and it still runs the same.

Then its not that then,but something is wrong with your air/fuel mix
to mutch fuel or not enough air.any one know how the surf gets its cold start
mix,is it the ECU and what does it control?

[BUSHWHACKER]

The only thing that hasn't been changed is the fuel pump so it's go to be that.

[foggy]

Before going for the fuel pump,disconnect the air temp.sensor and run without it,see what result that brings.You may get an alarm light up.

[TonyN]

Before going for the fuel pump,disconnect the air temp.sensor and run without it,see what result that brings.You may get an alarm light up.

Doesn't make a lot of difference, the air temp sensor isn't bothered whether its in or in the intake pipe, it just measures the temp where ever it is.

I see loads of trucks that people have left it out after changing the air filter, and they all run fine.

[foggy]

Then which sensor tells the ECU that the engine is cold and needs more fuel
if air temp sensor does nothing,toyota would not fit it.Defective sensors transmit rubbish to the ECU,rubbish in, rubbish out.May be similar to my reply.

[brian gillies]

Then which sensor tells the ECU that the engine is cold and needs more fuel
if air temp sensor does nothing,toyota would not fit it.Defective sensors transmit rubbish to the ECU,rubbish in, rubbish out.May be similar to my reply.

I disconected the air temp sensor and still drives the same. The only differance is that i now have fault code 8 which is the air temp sensor.

Does anyone know what the compression should be?

[foggy]

I had the exact same thing happen with my engine and this is what I found. In the air intake piping, where the EGR pipe meets the turbo air, just before the intake manifold, there is a flap-type valve (God knows why it it there) that can completely block the air from the turbo. It is operated by a 2" vacuum solenoid immediately in front of it. When your engine starts going up and down at idle check and see if this valve is cycling open/closed. If so, there are two vacuum lines going to the actuator. Disconnecting the lower vacuum line should keep the valve open all the time. I see no reason why you would want to block air from your turbo so I just plugged the vacuum hose and left it off. Haven't had a problem since.

Good Luck,

Paul
Just saw this on another thread,may be simillar?

[Hars]

Then its not that then,but something is wrong with your air/fuel mix
to mutch fuel or not enough air.any one know how the surf gets its cold start
mix,is it the ECU and what does it control?

Part of the cold start mix is to advance the timing. When my compression was low (white smoke when cold), I connected a variable resistor in series with the water temp sensor (the one hidden away on the engine block under the EGR valve) and adjusted the timing by adjusting the resistance. It works like a charm.