Fuel Pump Suction Control Valve

[Razorback81 Advanced Member Find all posts View Profile Close Razorback81]

Well based off of this thread, did a quick search....

$142!

http://www.amayama.com/search/?q=0422630010

I'm in - how hard is it to change one out on a Prado? Is it easier to remove the sump guard and do it from below?

i just checked that link you still had it in US $ in Aus $ it is $164.63 what is the post to Australia ?

[Rusty62 Advanced Member Find all posts View Profile Close Rusty62]

Just replaced the SCV. Tech stream showed the target and rail pressure not to bad.
Reason I replaced it was the new engine still smoked a lot more than I thought it should.
Tech stream result for new SCV didn't show any real difference, but under full load little to no smoke.

Maybe this should be another one of the things we replace every 120000 km.

Rusty.

[Anth120playdo Banned Find all posts View Profile Close Anth120playdo]

Just replaced the SCV. Tech stream showed the target and rail pressure not to bad.
Reason I replaced it was the new engine still smoked a lot more than I thought it should.
Tech stream result for new SCV didn't show any real difference, but under full load little to no smoke.

Maybe this should be another one of the things we replace every 120000 km.

Rusty.

Usually ok till 150-200k
Nice with a new one hey?

[120D4D Avid PP Poster! Find all posts View Profile Close 120D4D]

Hi ####,

My 120 is back in the shop - I think I have a dud SCV as it has the same symptons again. Hoping its that and not injectors again anyway...

Being told also that my (baileys recommended) repairer hasn't warranted the SCV and I can have the dud part and raise the matter directly with Denso??

This SCV is only 6 months and 10k old - am I just unlucky or would you expect Denso to chip-in the costs to replace?

(Assuming my highly unqualified diagnosis is actually correct)

[120D4D Avid PP Poster! Find all posts View Profile Close 120D4D]

Well the plot thickens!

My SCV (and everthing else for that matter) has apparently checked out 'ok' on their computer diagnostic and they cant audibly hear the rattle (warm engine it is quieter and age is not on his side in regards to hearing it...) so I have asked them to leave it there for the night and take it for a run in the morning.

There is a definate 'chatter' when cold and I can make it chatter when warm/hot too, surely this is not normal!

[MRW82 Member Find all posts View Profile Close MRW82]

Just replaced the SCV. Tech stream showed the target and rail pressure not to bad.
Reason I replaced it was the new engine still smoked a lot more than I thought it should.
Tech stream result for new SCV didn't show any real difference, but under full load little to no smoke.

Maybe this should be another one of the things we replace every 120000 km.

Rusty.

very interesting rusty, thanks for sharing this bit of info. I've had concerns about excessive smoke under load since my rebuild too. have quite a few work mates mention to me that it puffs quite a lot after following me.

just done an injector feedback test and the readings are brilliant, highest is 0.8-1.0 and total is in the 6's. but i noticed the fuel pressure is bouncing quite a bit. 27,000 to 33,000 which from what I have researched is out of spec.
looks like I should try a new SCV and see if I get an improvement.

have you had any improvement in fuel economy? mine isn't terrible, but not as good as I exepcted it to be after the rebuild, and not as good as before....

[Anth120playdo Banned Find all posts View Profile Close Anth120playdo]

Hi ####,

My 120 is back in the shop - I think I have a dud SCV as it has the same symptons again. Hoping its that and not injectors again anyway...

Being told also that my (baileys recommended) repairer hasn't warranted the SCV and I can have the dud part and raise the matter directly with Denso??

This SCV is only 6 months and 10k old - am I just unlucky or would you expect Denso to chip-in the costs to replace?

(Assuming my highly unqualified diagnosis is actually correct)

Well the plot thickens!

My SCV (and everthing else for that matter) has apparently checked out 'ok' on their computer diagnostic and they cant audibly hear the rattle (warm engine it is quieter and age is not on his side in regards to hearing it...) so I have asked them to leave it there for the night and take it for a run in the morning.

There is a definate 'chatter' when cold and I can make it chatter when warm/hot too, surely this is not normal!

Sorry for the delay been v busy.

Here's some info, I have had faulty Scv's. My supplier sorted the part replacements. I wore the labour.
So people you might not want to buy these sort of parts from overseas suppliers. Warranty may be difficult.

Baileys injectors are usually much quieter. Just because you have NEW or BDG injectors, it des not guarantee a quiet engine.
These engines do make some interesting sounds. Some are very quiet. Some make noises when warmed up.
So as long as the numbers are right & there are no other issues, I'd say not to worry about any noise too much.
If it is very noisy you can try & chase it but it could get costly.

First cause of engine knocking or rattle is Injectors.
Second is abnormal common rail pressure.
Then you have friction between parts & compression.

Check compensation codes.
Check for fuel leaks.
Intake system leakage or blockage? Egr soot?
Could be a bad sensor, fuel pressure, map or maf sensors?
Vehicle mods or bad fuel

Hard to say without seeing it. Or hard even if I saw it. :???:

I hope that helps.

[mackayvx Advanced Member Find all posts View Profile Close mackayvx]

Hey ####.
Does a 1kzte have a SCV?
Our prado is gutless as and im wondering if this would help?
Drew.

[cfryback Find all posts View Profile Close cfryback]

Hey ####.
Does a 1kzte have a SCV?
Our prado is gutless as and im wondering if this would help?
Drew.

My Russian is off, but the exploded view does look like a SCV

http://www.land-cruiser.ru/uploads/p...1301582097.png

[adrian5800 Advanced Member Find all posts View Profile Close adrian5800]

Hey ####.
Does a 1kzte have a SCV?
Our prado is gutless as and im wondering if this would help?
Drew.

There's no SCV on a 1KZ, only on common rail injection systems.

[mackayvx Advanced Member Find all posts View Profile Close mackayvx]

My Russian is off, but the exploded view does look like a SCV

http://www.land-cruiser.ru/uploads/p...1301582097.png

I speak Vietnamese better than I do Russian!

Dim sim & Chow Mien... See Im pretty good!

[Rusty62 Advanced Member Find all posts View Profile Close Rusty62]

very interesting rusty, thanks for sharing this bit of info. I've had concerns about excessive smoke under load since my rebuild too. have quite a few work mates mention to me that it puffs quite a lot after following me.

just done an injector feedback test and the readings are brilliant, highest is 0.8-1.0 and total is in the 6's. but i noticed the fuel pressure is bouncing quite a bit. 27,000 to 33,000 which from what I have researched is out of spec.
looks like I should try a new SCV and see if I get an improvement.

have you had any improvement in fuel economy? mine isn't terrible, but not as good as I exepcted it to be after the rebuild, and not as good as before....

So far no difference in fuel economy even before the engine rebuild. I keep very accurate figures for tax.
One thing to note if I drive like Mis Daisy for a couple of weeks, then put the trailer on the back I can make the world come to an end. Or at least look like it. After a few hundred km the smoke will all but disappear so I'm thinking it is more of a soot build up in the cat and manifolds. Maybe I need to drive with a bit more gusto and get more boost to blow out the soot.

We went camping over Easter and as it rained for a couple of days the solar panel was useless so we idled the motor for several hours to charge batteries and heat the water for showers. When we packed up on the Monday morning and left the campsite a mixture of black and blue smoke was seen. So we may have a small oil leak out the turbo, not enough to warrant a rebuild.

Rusty.

[mackayvx Advanced Member Find all posts View Profile Close mackayvx]

There's no SCV on a 1KZ, only on common rail injection systems.

Cheers Adrian. Thanks for clarifying.

Yep the old kz has done 300 thousand hard kays and she doesn't play well with hills these days.
Im looking for a simple explanation rather than accepting the obvious... its a KZ...

[cfryback Find all posts View Profile Close cfryback]

Cheers Adrian. Thanks for clarifying.

Yep the old kz has done 300 thousand hard kays and she doesn't play well with hills these days.
Im looking for a simple explanation rather than accepting the obvious... its a KZ...

Dare I say that it is a carbon/gunk build up on the intake?

[mackayvx Advanced Member Find all posts View Profile Close mackayvx]

Dare I say that it is a carbon/gunk build up on the intake?

Nah mate its got the egr blank plate installed when it got a new head.
Its just a kz.