Announcement

**charvell** · 14 August 2007, 12:30

Originally posted by jaydee

Hi guys,

My surf has developed an intermittent problem. From time to time it has a problem idling. When it kicks in the revs go up and down a few hundred rpm and when i try to clear it with some revs it dumps a lot of black smoke.

This seems to be happening more and more on a journey of any length now. As quickly as it happens it goes away though. After searching on the forum I came up with a few possibilities

- Fuel filter needs changing. This could be the one as I did run it a bit low on fuel a few weeks back and maybe pulled a load of crud through to the filter.

- Injectors blocked. It runs fine as soon as its off the idle so not sure about this one

- Loose connection on the fuel pump solenoid. I found someone on here who had the same symptoms as me and this was the problem.

- Some sort of turbo seal problem?

I have lobbed a bottle of redex in to the tank last night to see if this helps, but I just wondered what I should be checking for as the most obvious culprit. I don't know where to look for the fuel pump solenoid so it'd be helpful if someone could point me in the right direction here. Also is there a write up on replacing the fuel filter anywhere?

Sorry for being such a noob, I've not done a lot of work on this surf to date.

Change the fuel filter mate, its the cheep option. Fill the filter with red ex, and drive like a bit of a looney

**jaydee** · 15 August 2007, 21:16

Originally posted by charvell

Change the fuel filter mate, its the cheep option. Fill the filter with red ex, and drive like a bit of a looney

Done, filled it with redex too. Its still there but at the moment feels slightly better than before -- the revs dont rise and drop as much. When it does it I still get tons of black smoke when i accelerate off the idle. Still as quickly as its there its gone again. Any more suggestions would be appreciated

**charvell** · 16 August 2007, 08:55

Originally posted by jaydee

Done, filled it with redex too. Its still there but at the moment feels slightly better than before -- the revs dont rise and drop as much. When it does it I still get tons of black smoke when i accelerate off the idle. Still as quickly as its there its gone again. Any more suggestions would be appreciated

Take it one a motorway and drive the nuts off it, the injectorsmight be dirty and sticking a bit and overfueling. once the redex has done its job it should settle. are you running on veg at all

**jaydee** · 22 August 2007, 09:31

I've now thrashed the pants off it for about 200 miles.. its getting worse

It runs like a dream off tickover, but the only way to drive it is to keep the idle up button on and sit at junctions in neutral. Any more ideas before i book it in?

Oh an its never been run on veg oil

**BUSHWHACKER** · 22 August 2007, 09:40

Originally posted by jaydee

I've now thrashed the pants off it for about 200 miles.. its getting worse

It runs like a dream off tickover, but the only way to drive it is to keep the idle up button on and sit at junctions in neutral. Any more ideas before i book it in?

Oh an its never been run on veg oil

I'm thinking TPS (throttle position sensor) or the timing belt has jumped a tooth on the fuel pump.

Have you checked for fault codes? Is the red, engine check light on?

**jaydee** · 22 August 2007, 12:55

Well it had a new head about 1000 miles ago an the guy who fitted it didn't exactly fill me with confidence to say the least. Its possible that he got something wrong when he rebuilt it. But its ran pretty well till now.

My biggest problem here is that this is my first surf and my mechanic is a BMW/VW specialist because thats what i've always owned. I'm gonna check with him today if he has any experience with jap diesels cos its starting to really annoy me.

**BUSHWHACKER** · 22 August 2007, 12:57

Originally posted by jaydee

Well it had a new head about 1000 miles ago an the guy who fitted it didn't exactly fill me with confidence to say the least. Its possible that he got something wrong when he rebuilt it. But its ran pretty well till now.

My biggest problem here is that this is my first surf and my mechanic is a BMW/VW specialist because thats what i've always owned. I'm gonna check with him today if he has any experience with jap diesels cos its starting to really annoy me.

So it could be something simple like a vacuum pipe fitted incorrectly.
this is the TPS by the way....

**jaydee** · 22 August 2007, 14:11

thanks for the sugestions Bushwacker.. Is that a 3.0 TD engine in that pic because it looks different to what I can see when I look at the engine from the same angle?

**davemaxx** · 22 August 2007, 19:07

could be an egr valve malfunction, have you still got yours connected. if so you can pull the vacume pipe off and then fit anouther temp pipe to it and gently blow and suck down it, you should be able to feel the valve open and close, it only operates with a very week spring, they can get carboned up and stick open, this can be a pain because it will be blowing exaust gas in at the wrong time. if its feels like its functioning ok i would still try blocking the suction pipe to it. or clamping it from functioning because sometimes outher solenoids and gubins can make it malfunction. if its jammed open you could try when the engin is cold, squirt some break cleaner into it and give it a clout with a sponner, it might snap shut.

**jaydee** · 23 August 2007, 11:45

I havent done the egr mod (yet)

So here goes, just to make sure i've done it right i'm gonna make a complete @ss of myself by taking pictures of me doing it to the wrong pipe

If this is the right pipe then the plastic valve is doing nothing as i can blow straight through it all the time (with it disconnected at both ends)

Still if this is the wrong pipe then that might be what its supposed to do LOL

**jaydee** · 23 August 2007, 12:46

After reading through a few more older posts on this, I think I may be looking at the wrong 'flying saucer' is it the one thats higher than the one i've pointed to on the pic?

All the EGR posts have broken links to the pictures and links

**davemaxx** · 24 August 2007, 00:48

yes thats the EGR valve the metal flying saucer, but the plastic thing is just a filter. see that 2" piece of rubber tube between the plastic thing and the flying saucer, pull it away from the flying saucer, then fit a temporary piece of tube the same bore and about 20" long to it and gently blow and suck to see if the valve inside is lifting and closing, (probably about the same volume of air that would fill a thimble is all the force you need to lift and close the valve) you will feel it move if its not cagged up,
if its ok, remove the temporary tube and cut the 2" tube in half with a pair of scissors and then join it back together with a piece of 4mm shaft about 20 mm long (a piece of bolt) and then re connect it to the EGR valve.
so you should have - plastic thing then 1" tube, then bolt then 1" tube then EGR valve.
if you have pushed the bolt into the tube really well, you won't see it and only you will know that the EGR is bloked and prevented from working.
i hope this sorts it for you.
because of your first post saying iratic idle, i think it may be jamed open or opening to early, thats why i say try and test its function.
i had motor that did the very same thing, the EGR valve was fine, but there were so many other components that could have been making it malfunction it was the simpelist solution to block it off, it won't do any harm, aparantly the european model doesn't even have one fitted as standard.

**jaydee** · 24 August 2007, 09:55

Thanks mate, I've found the perfect thing to jam in there. Just gotta do the blow test now.

**jaydee** · 28 August 2007, 08:52

Unfortunately it wasn't the EGR valve as its still playing up with it blocked off.

Its booked in on Thurs with my mechanic, so hopefully will know more by then

Announcement

Eratic idle - intermittent

Eratic idle - intermittent

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment