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Diesel Common rail Pump Test question? #

Posted by Chanaka Johns on February 21, 2017, 3:42 pm

Year of Manufacture *: 2010
Engine Size and Code *: TOYOTA 3L 2KD-FTV

Any Diesel Guru please help me... CRDI Diesel has high pressure pump It has 2 pin Solenoid it has many names such as Volume control Valve (VCV) or Suction Control Valve (SCV) or Fuel Metering Valve(FMV)

Ok What ever the name is... here is the question...

I have Toyota 2KD-FTV Engine It cant Build pressure on crank

Will Pump build MAX Pressure if i unplug the connector of the hp pump while cranking..?

Somebody told me above test..Can anybody verify it.. Thanks in Advance.?

Re: Diesel Common rail Pump Test question...?

Posted by Steve Shaw on February 21, 2017, 4:02 pm, in reply to " Diesel Common rail Pump Test question...?"
Steve Shaw

Hi Chanaka

you should substitute the scv for a dummy actuator to check max output on the pump, but how are you going to read the pressure?
they're quite a common failing & do cause the symptoms you've got (denso system i assume?)

Regards Steve

Re: Diesel Common rail Pump Test question...?

Posted by CHANAKA JOHNS on February 21, 2017, 5:14 pm, in reply to "Re: Diesel Common rail Pump Test question...?"
Chanaka Johns

Hi Rail pressure sensor is ok.. so i can use the Scanner...

I am after quick test ideas.....

i guess no need dummy SCV actuator just unpluging the SCV connector and fooling the ecu with test light might work right..? Will it build pressure..?

How about connecting some fuel pressure sensor to out put side of hp pump using one of this ..(MaxTow 30,000 PSI Fuel Rail Pressure Gauge )..https://www.amazon.com/MaxTow-Fuel-Rail-Pressure-Gauge/dp/B00GLXY7C2/ref=sr_1_18?ie=UTF8&qid=1487696867&sr=8-18-spons&keywords=fuel+rail+pressure+sensor&psc=1

Thanks..

Re: Diesel Common rail Pump Test question...?

Posted by Ian Baxter on February 21, 2017, 9:47 pm, in reply to "Re: Diesel Common rail Pump Test question...?"

Hello Chanaka,
Bear in mind if the SCV is already mechanically defective i.e leaking back. Disconnecting the electrical supply will make no difference.
If you see what I mean

Ian

Re: Diesel Common rail Pump Test question...?

Posted by Kevin Apps on February 22, 2017, 12:24 am, in reply to "Re: Diesel Common rail Pump Test question...?"

CJ

"Rail pressure sensor is ok" how did you test it ?

As for the maxtow not sure i would trust it.

You seem to be going for cheapest diagnostics !
Kev.

Re: Diesel Common rail Pump Test question...?

Posted by CHANAKA JOHNS on February 22, 2017, 1:57 am, in reply to "Re: Diesel Common rail Pump Test question...?"
Chanaka Johns

Hi Can"t we verify FRP sensor by

Pluging in MaxTow 30,000 PSI Fuel Rail Pressure Gauge to the out put side

OR

Cracking open HP pump output side..

Still i dont get the answer... Will rail pressure go to MAX Limit if HP Pump is unpluged while cranking..? i yet to try this..

Re: Diesel Common rail Pump Test question...?

Posted by Antony Powell on February 22, 2017, 9:18 am, in reply to "Re: Diesel Common rail Pump Test question...?"

"Cracking open HP pump output side"

A comment like this makes it sounds like you don't know how common rail works.

Either get trained or get someone in who does.

Before someone gets hurt of you cause serious damage !!!

Link: specialist seized injector and glow plug removal services

Re: Diesel Common rail Pump Test question...?

Posted by Steve Shaw on February 22, 2017, 10:55 am, in reply to "Re: Diesel Common rail Pump Test question...?"
Edited by board administrator February 22, 2017, 3:09 pm

Chanaka

the answer is i don't know for sure, but an actuator kit is cheap & i know it will make the pump run at max to check pressure

http://www.ebay.co.uk/itm/Delphi-False-Actuator-Kit-Common-Rail-Diesel-Pump-Delphi-Bosch-Denso-Siemens-/252169575265?hash=item3ab67a5b61:g:UBIAAOxyItRTduVn

you just need an accurate method of measuring it safely

steve

Re: Diesel Common rail Pump Test question...?

Posted by Kevin Apps on February 22, 2017, 10:59 am, in reply to "Re: Diesel Common rail Pump Test question...?"
Kevin Apps

CJ

"Still i dont get the answer... Will rail pressure go to MAX Limit if HP Pump is unpluged while cranking..?"

Ian answered that.

You need to listen to what Tony is telling you.

Kev.

Re: Diesel Common rail Pump Test question...?

Posted by CHANAKA JOHNS on February 22, 2017, 2:30 pm, in reply to "Re: Diesel Common rail Pump Test question...?"
Chanaka Johns

Hi i know the risks..i wont crack open HP lines when engine running ..Just stepping the starter is fine when KOEO..

Re: Diesel Common rail Pump Test question...?

Posted by CHANAKA JOHNS on February 22, 2017, 3:15 pm, in reply to "Re: Diesel Common rail Pump Test question...?"

Hi thank you for the link...Is this Dummy Valve kit..?

My SCV valve is normally closed type

i don't know if kit recommended by Mr Steve Shaw is compatible with mine below

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