Repairing the SCV Suction control valve

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Re: Repairing the SCV Suction control valve

Postby viking shippy on Sun Mar 06, 2016 4:28 pm

Thanks fellas for your help I appreciate it...
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Re: Repairing the SCV Suction control valve

Postby viking shippy on Sun Mar 06, 2016 4:30 pm

Lol and now cause I tryed to repair it and made it worse..I cannot wait 5 days for an eBay one I'll be paying stealer price..
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Re: Repairing the SCV Suction control valve

Postby RHKTriton on Sun Mar 06, 2016 5:34 pm

That's a bugger VS.

Sometimes wonder whether its worth building up an inventory of some of the critical bits in advance of predicted part replacement.
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Repairing the SCV Suction control valve

Postby viking shippy on Sun Mar 06, 2016 6:21 pm


Yep that's a good idea!
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Re: Repairing the SCV Suction control valve

Postby Snooozy on Sun Mar 06, 2016 8:11 pm

RHKTriton wrote:Off topic: VS's pic through the wheel well suggests this is probably the best path to the oil pressure switch. Much involved in getting a second oil sensor in there?


I fitted an extra oil pres sensor. (check the last couple of pages of my build) in through the wheel arch is by far the best option. Make sure you get hold of a deep oil pressure switch socket, its a real pain without it.
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Re: Repairing the SCV Suction control valve

Postby RHKTriton on Mon Mar 07, 2016 6:27 am

That space behind the back seat is obviously for spare parts storage VS.
The jack is probably there as a hint. :lol:

I was amazed when I went to get a "genuine' radiator cap at the dealer a few weeks back - order in item.

I think they only came up with one after embarrassing the service guy and I suspect they pinched one from a booked job.

Snooozy, does the oil sensor hold the banjo fitting in the block, or does it have its own threaded bit?
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Repairing the SCV Suction control valve

Postby viking shippy on Mon Mar 07, 2016 9:26 am

Here is my results
1. The only injector pump turbo builder on the cent coast is at Shepards Diesel service Gosford...
They had one on the shelf abate it be a Nissan part...and Neil the owner let me pull into his workshop drive and r&r the scv...legend...Neil was also good for a chat and provide old fashioned service...new "Denso" scv $215
2 - Mitsubishi at Wyong abate them providing good service $135p/h and the genuine "Denso" part $430....is borderline daylight robbery.....
3- no codes,no dead spot,no surging,no loud clacking noise from engine bay...no more 12.9/100 km
Now 10/100....
4- should have done this at 150k....as part of regular servicing...
5- don't polish mod or pull apart the scv JUST CHUCK A NEW ONE IN....
6 ...scv cpu install & sql can wait till next service with valve clearance....adj.
7 ...eBay scv... Good option for 150...
But hey I've another 150k before I need one right...
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Re: Repairing the SCV Suction control valve

Postby Cowboy Dave on Mon Mar 07, 2016 10:32 am

That's not a bad result.
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Re: Repairing the SCV Suction control valve

Postby ag9111 on Mon Mar 07, 2016 10:34 am

viking shippy wrote: and the genuine "Denso" part $430....is borderline daylight robbery......


Glad I am getting mine done under warranty at 58,000km
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Re: Repairing the SCV Suction control valve

Postby snowman on Mon Mar 07, 2016 11:04 am

ag9111 wrote:
viking shippy wrote: and the genuine "Denso" part $430....is borderline daylight robbery......


Glad I am getting mine done under warranty at 58,000km


x2 (MN) 50,000klms
This car is like a bad drug habit. It is taking all my money and time, my family are concerned, but new mods just feel sooooooo good.
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Re: Repairing the SCV Suction control valve

Postby Cowboy Dave on Mon Mar 07, 2016 11:10 am

These 2 ^^ that failed after Shippy's, are they also the pinky coloured short ones like in Shippy's photos or are they the longer bluey/grey ones?
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Re: Repairing the SCV Suction control valve

Postby ag9111 on Mon Mar 07, 2016 11:28 am

One is Shippy's photo looks grey/blue to me. Didn't know there was 2 different types.
Never looked, don't even know where it is. Let the dealer deal with it.
Did 150,000km in silver MN without a problem with SCV :?
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Re: Repairing the SCV Suction control valve

Postby Cowboy Dave on Mon Mar 07, 2016 11:50 am

Yeah there are a couple. The colour fades which can make it hard to make out. Also photos are being taken in shadows.

The metal barrel on the pink one is only maybe half as long as the blue one. When they're side by side you can see that the nozzle bit on the pink one is similar in size to a standard garden hose connector whereas the blue one has a smaller nozzle on it. The plugs are the same though.

Which one is needed depends on which fuel pump you have. There have been some interesting cross-overs between the MN and ML here too but I haven't been able to pin down when they changed. Shippy's is an ML but has the pink one. Mine and Tony's are 09 MNs and have the pink one. From memory Mattz might have had the pink one in his ML too. But SRB who also has an MN had a blue one. And a recent batch of MN engines I saw there was one pink and the rest blue.

I think, but can't be sure, that it is the pink ones you can dismantle, but the blue ones aren't serviceable.
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Repairing the SCV Suction control valve

Postby viking shippy on Mon Mar 07, 2016 12:02 pm

ag9111 wrote:One is Shippy's photo looks grey/blue to me. Didn't know there was 2 different types.
Never looked, don't even know where it is. Let the dealer deal with it.
Did 150,000km in silver MN without a problem with SCV :?


Lol the plug looks grey to me
Or is it blue or gold..?
The scv is def pink...ish Click to view larger pictureClick to view larger picture
Click to view larger picture
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Re: Repairing the SCV Suction control valve

Postby ag9111 on Mon Mar 07, 2016 12:10 pm

SCV_2.jpg


Here you go Dave, 2013 model
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Re: Repairing the SCV Suction control valve

Postby ag9111 on Mon Mar 07, 2016 12:20 pm

SCV_3.jpg


Crappy photo I know, but couldn't get a better shot without dismantling stuff. Shows the difference in length a bit better
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Re: Repairing the SCV Suction control valve

Postby RHKTriton on Mon Mar 07, 2016 4:50 pm

Good to see ya won in the end VS.

Yes I freaked too when I first quizzed a couple of dealers on the SCV.

These things are really a consumable, just like a timing belt or oil filter..Oh they're dear as poison for genuine! :lol:

Just saw where I got mine; Diesel Systems Australia in Cheltenham, good service.
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Re: Repairing the SCV Suction control valve

Postby Cowboy Dave on Mon Mar 07, 2016 4:50 pm

So the way it has been explained to me is that the pink one is a higher performing unit (NFI how they can perform differently) but the blue ones are more durable and have a longer service life.

Which one you have depends on your pump. Query whether there was a pump upgrade as well somewhere along the line or if they're much the same but with a different label.
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Re: Repairing the SCV Suction control valve

Postby Cowboy Dave on Mon Mar 07, 2016 5:15 pm

Click to view larger picture


Click to view larger picture


The short one is the one I've been calling pink. The long ones used to be dark blue (like Garth's greeny-blue one above) but seem to be trending towards grey now.
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Re: Repairing the SCV Suction control valve

Postby coughy on Mon Mar 07, 2016 6:43 pm

the long one is the one in which is better
denso dont make the short pump type any more
i just replaced my pump from a one same as vs and they gave me a new pump with the longer scv and was told this is much better than the short one as it has a bigger coil and control the mettering alot better of the fuel..
it goes by the pump numbers and you can go up to the long scv if you have a short one fitted but cant go down to the short one if you have a long scv fitted if that makes sence..
there is absolutly no power difference in the 2 scv valves is that denso has relised that the failure rate of the shorter ones isnt good so they up specked the newer pumps with a better scv... for much better fuel control delivery and longer lasting scv...
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Re: Repairing the SCV Suction control valve

Postby coughy on Mon Mar 07, 2016 6:47 pm

i will get a picky of the new pump number in mine and post it as the older stlye pumps are getting harder to get and the internals are the same but the scv section is different i was told by denso hence the one way scv thingy
there is a adapter which you can use but more change of a leak and denso said not very good...
like this

http://www.ebay.com.au/itm/271611534077 ... EBIDX%3AIT
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Re: Repairing the SCV Suction control valve

Postby Snooozy on Mon Mar 07, 2016 9:12 pm

RHKTriton wrote:Snooozy, does the oil sensor hold the banjo fitting in the block, or does it have its own threaded bit?

The banjo stayed in place. It is very hard to see in there so didn't get a good look at the fitting.
Just need to be careful when tightening the adapter.

I had to re-do mine a couple of weeks later due to an oil leak, all good now though.
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Re: Repairing the SCV Suction control valve

Postby borngeek on Tue Mar 08, 2016 3:33 am

coughy wrote:the long one is the one in which is better
denso dont make the short pump type any more
i just replaced my pump from a one same as vs and they gave me a new pump with the longer scv and was told this is much better than the short one as it has a bigger coil and control the mettering alot better of the fuel..
it goes by the pump numbers and you can go up to the long scv if you have a short one fitted but cant go down to the short one if you have a long scv fitted if that makes sence..
there is absolutly no power difference in the 2 scv valves is that denso has relised that the failure rate of the shorter ones isnt good so they up specked the newer pumps with a better scv... for much better fuel control delivery and longer lasting scv...


coughy wrote:i will get a picky of the new pump number in mine and post it as the older stlye pumps are getting harder to get and the internals are the same but the scv section is different i was told by denso hence the one way scv thingy
there is a adapter which you can use but more change of a leak and denso said not very good...
like this

http://www.ebay.com.au/itm/271611534077 ... EBIDX%3AIT


Mostly all true.

The longer SCV last longer and works better, higher flow rate. Is more expensive too.
The adaptor kit works fine, if the o-rings, longer bolts, and new nozzle are all fitted - and should be supplied. Although that kit doesn't look complete on the ebay link.. :?

They still make the pink one.. In 3 different models. STD one, higher flow, and Extreme flow. They do not last as long as the long one does.
That style pump is not new as such, just used in the pajero rather than the triton - usually. Although variations amongst the triton's has been observed.

Replacing the pump is much easier on a 2.5 than a 3.2 (is a two day job for a 3.2 - I have blown up 3 of them ;) )

The newer engines are indeed coming standard with the longer SCV pumps, and you cannot put a shorter one on those pumps.

//Like some have said, they're a consumable. Personally wouldn't bother trying to repair, is just a brake fix for a failing component...

You want them to last longer? All you engine idlers should turn your cars off when you stop. Its NOT better for your engine.. The SCV is working 100% at idle, they are "NORMALLY OPEN" on tritons.

You drive me mental anyway. STOP IT :lol:
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Re: Repairing the SCV Suction control valve

Postby borngeek on Tue Mar 08, 2016 4:11 am

Rather than edit.. Correction.. Hilux scv in that link, by coughy.
These do not work on Mitsubishi, Nissan, Isuzu etc.
Toyota ones are normally closed operating. Opposite.
So they can idle as much as they like, although I still despise it
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Re: Repairing the SCV Suction control valve

Postby Tony on Tue Mar 08, 2016 6:08 am

Well said Geek, I just happen to have the HD SCV here with proper adapter to suit the pumps with that short thing that's prone to failure. The adpaptor is fine and will cause no drama when fitted correctly. Kit comes with O rings and fixings needed. Very nice upgrade. 8-)

I have found the short SCV (even though looks like would flow more) has caused fuel starving up around 4000 RPM when running the new Dominator MK3 on high output tunes (Fuel pressure and fuel duration) It just cant keep up. :lol:
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