Fuel Pressure Regulator / Suction Control Valve - How To Test & Check

In this video I go through the step by step process of diagnosing and fixing an engine management light warning fault on a Isuzu VCDI 3.0 Diesel 4JJ1 engine. This was on a Holden Rodeo RA but this engine is found in many other vehicles like a Nissan Navara & Pathfinder, Isuzu D-Max MU-X Duramax, Holden Colorado RC



Disclaimer:
GerardBurke is a qualified motor technician who has completed modules & courses in manual handling and all aspects of workshop safety. These videos are not intended to be used by anyone who is not trained and or qualified to carry them out.
Due to factors beyond the control of GerardBurke, I cannot guarantee against improper use or unauthorized modifications of this information. GerardBurke assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. GerardBurke recommends safe practices when working on vehicles and or with tools seen or implied in this video. Due to factors beyond the control of GerardBurke, no information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not GerardBurke.

How to replace a suction control valve on a Holden Rodeo Colorado
How to test and change the Suction Control Valve on a Isuzu 4JJ1 common rail diesel engine
Fuel metering control valve aka fuel pressure regulator on a diesel high pressure pump

Related fault codes P0087 P0089 P1093 P1094 P0093
• P0087 - Rail Pressure Limiter Operation
• P0088 - Abnormal Rail Pressure
• P0093 - Fuel Leak or Rail Pressure Sensor
Performance Abnormality
• P1093 - Rail Pressure Insufficient at High Load
• P1094 - Fuel Rail Pressure Too Low

#SuctionControlValve #Diagnostics #P0089

[GerardBurkeBurkesGarage]

This repair was done earlier in the year and has solved the customers running issues.
Part numbers for the SCV are VSC100GEN / A6860EC09A (Nissan Genuine Part Number)
As always, thanks for watching

[Dave-dm]

I have a Fiat 1.3 that trips the low fuel pressure flag when I put the accelerator down. The rail pressure just drops then pings straight back. The pump can’t react that fast. Your video has given me the confidence to pull my valve which is on the pressure side and take a look.

[craigcoleman]

Great work Gerard! This is probably the most informative video on this problem that I've come across. I experienced a SCV failure back in 2016 and after shelling out $800 for the local specialist Diesel mechanic to fix it, I thought I'd have a crack at it myself this time. Mine failed again a couple of weeks ago and threw the same codes. $50 for a replacement SCV off ebay but I wouldn't exactly say they are easy to replace. Access is a nightmare (particularly the lower bolt) and if you accidentally drop a bolt or your Allen key it finds its way into the notch of the engine mount bracket and is completely unreachable (trust me! Don't let anything fall). I have exact same car (07 4JJ1) and this seems to be its only real weakness. Just clicked over 300, 000.

[johnwilson]

Thanks for your clear description of what is going on in this situation. My Captiva has a low pressure fault and I was told that the HP fuel pump needed to be replaced. I've stripped and inspected it and found nothing wrong with the pump. The valve operates electrically, but I'll see if I can get into it to inspect it for wear. I've been told by another service business that there may be a seized injector that could be causing the low pressure issue, so have to investigate that as well.

[seer]

Awesome job! I've research a ton on these valves and issues relating to low fuel rail pressure errors and no one explains HOW these valves can actually produce such errors. It's just as I suspected- mechanically hanging up.

[neildean]

I had the same symptoms and rough idle occassionally on my GM 1.7cdti. Mine did not have scoring but it was dirty inside and when i cleaned and put it back the rough idle went away and the low pressure issued rectified. I have ordered a new part and will replace it when the weather warms up. I was wondering about it needing calibrating to the engine, so i recommend keeping the old part until the car is in good working order and you are satisfied. Thanks for the great video

[VincentHolland-wj]

Very well explained direct and to the point no rubbish talk, but what else would expect from an Irish man. Thanks for the information Cheers.

[scrapmandan]

Fantastic detailed video, no bullcrap, straight to the point, Sir you now have a new sub. Just one question please, Does this part replacement need re programming, I'm about to do mine on a Mk7 Ford Transit 2.2 TDCI, Thank you 😎💜✌🏻

[nigelwebber]

Thanks for taking the time to show this. Interesting and valuable info.

[keithmith]

thankyou, , did you get an answer from the client that it did in fact solve his issue just noted that you did inform us further down the comments, very informed video

[loidjiebelong]

Great work very informative. Thank you so much. I'm from the Philippines

[michaellafferty]

Hi Gerard very informative video My car suddenly wouldn't start low fuel pressure could the valve be the cause in other words does the valve creates the pressure

[genericdude]

Interesting. I would imagine that most shops wouldn't go to this detail because of the labor cost.

[patcarmax]

Brilliant great indepth explanation thank you " good work !! "

[gedman]

top bloke well explained have same code on volvo c30 1, 6 d going to replace fuel filter first if that doent work the pressure reg valve next fingers crossed not pump faulty

[krtolebiohazardcs.]

Should I disconnect battery first, and then removing that regulator?

[jivasasha]

Hi there,
very useful information.
can you tel me please what is your opinion on this problem?
p0087 intermittent on diesel 2.2 idtec honda.
after deleting the dtc all works fine.
the pressure on freeze frame shows god pressure in the rail.
I am lost.
thanks.

[-DC-]

GM Vectra 3.0 Cdti with the Isuzu suffered with SCV problems also, Expensive part here in my part of Europe.

[erkutsaid]

Would the suction control valve cause over fueling also?

[aveirozinou]

hello, after watching your video i haev a question about my car, i have a passat CFFB 2.0 TDI, recentely i start to monitor my car data by vcds, i see that my diesl pressure fluctuating from 26301 KPA to 31801 Kpa, thats too much but car work fine, i test a freind car and i found that the pressure is almost stable '( from 29929 KPA to 28929), what should i do please ? any idea? should i replace or clean the RAIL FUEL PRESSURE SOLENOID VALVE or the one located on the HP pump (fuel pump pressor sensor or named suction control valve) wich one is responsible of this fluctuating ? thank you