Diesel Fuel Injection System Help Desk

**akosijepoii** · August 8th, 2012 01:23 PM

effect yung magiging pdeng bad effect nya sa engine
pag na ka block egr ko on my patrol zd30 engine..or ano ang pros and cons??

**markstep128** · August 8th, 2012 02:07 PM

Originally Posted by Dieseldude

Hi sir Dieseldude, I have a 4m40 3 door Pajero and my problem before was my fuel consumption. So What I did was change the zexel noozles and had it pressure test, after that sir what i noticed is that my fuel consumption stayed the same when I rev up to 3k or above RPM experience black smoke and when I drive it full pedal it's hard to push beyond 80kms/hr. By the way sir I just changed new air filters. Are you saying that there was no improvement after replacing the nozzles?

Any advice sir? I'm thinking to just having it calibrated. Will it solve the problem? Thanks. Check EGR before considering calibration.

Yes there was only 1km/liter improvement after I changed my noozles. Also I let the mechanic adjust delay of the injection pump para maging matipid sya.

Is there an improvement in the fuel consumption sir if ma block yung EGR?

**Dieseldude** · August 9th, 2012 02:29 AM

Yes there was only 1km/liter improvement after I changed my noozles. Also I let the mechanic adjust delay of the injection pump para maging matipid sya. Timing is supposed to be set to specs.

Is there an improvement in the fuel consumption sir if ma block yung EGR? Fuel consumption and smoke will improve if a malfunctioning EGR is repaired or blocked.

**Dieseldude** · August 9th, 2012 02:36 AM

Originally Posted by akosijepoii

effect yung magiging pdeng bad effect nya sa engine
pag na ka block egr ko on my patrol zd30 engine..or ano ang pros and cons??

Walang bad effect sa engine kung tama ang procedure sa pag block ng EGR.
Engines with blocked EGRs will have higher NOX emissions at idle and part load operation.

**Pidok** · August 15th, 2012 10:12 PM

Sir Dieseldude, may electric supply pump ba yung montero latest model feeding diesel to the mechanical high pressure pump.

**Dieseldude** · August 16th, 2012 06:40 AM

Originally Posted by Pidok

Sir Dieseldude, may electric supply pump ba yung montero latest model feeding diesel to the mechanical high pressure pump.

Walang electric fuel pump ang montero dahil integrated na sa high pressure pump ang suction/feed pump.

**Pidok** · August 16th, 2012 07:14 AM

Originally Posted by Dieseldude

Walang electric fuel pump ang montero dahil integrated na sa high pressure pump ang suction/feed pump.

thank you sir sa info..naitanong ko kasi balak ko kasi ako magpalit ng fuel filter ng montero, baka kako mahirap magprime ng suction ng hp pump kung walang electric feed pump. so hand pump lang kelangan to prime the suction after fuel filter replacement?

**Dieseldude** · August 17th, 2012 01:05 PM

Originally Posted by Pidok

thank you sir sa info..naitanong ko kasi balak ko kasi ako magpalit ng fuel filter ng montero, baka kako mahirap magprime ng suction ng hp pump kung walang electric feed pump. so hand pump lang kelangan to prime the suction after fuel filter replacement?

You are right.

**juncallueng** · August 20th, 2012 09:05 AM

Sir Dieseldude, My Toyata innova diesel 2006 model stalled 3 times when we were going up to Tagaytay yesterday. It stalled again 1 more time when we were going back home in SLEX. Napansin ko nag stall say nuong 100kph ako, pero 80kph or less ok naman. I have no black smoke or no noticeable lost of power. Im not sure it its just my fuel filter (I never remembered changing them) or is about the Suction Control Valve.Will you be able to determine if its just my file filter or SCV. If it is the SCV that causing the problem how much will it be and how long will it take to fix it? Is central diesel open today or tom? Thanks

**Dieseldude** · August 22nd, 2012 08:09 AM

Sir Dieseldude, My Toyata innova diesel 2006 model stalled 3 times when we were going up to Tagaytay yesterday. It stalled again 1 more time when we were going back home in SLEX. Napansin ko nag stall say nuong 100kph ako, pero 80kph or less ok naman. I have no black smoke or no noticeable lost of power. Im not sure it its just my fuel filter (I never remembered changing them) A blocked fuel filter will show on your dashboard. The filter indicator lamp will be continuously lit. Fuel filters need replacement at the prescribed interval, 1 year max if I remember right. An old filter can disintegrate and be pulled in by your fuel pump. Damage to your fuel system can be very extensive.

or is about the Suction Control Valve.Will you be able to determine if its just my filter or SCV. If it is the SCV that causing the problem how much will it be and how long will it take to fix it? Is central diesel open today or tom? Thanks Yes, this can be checked. But as I said, your fuel filter needs immediate replacement. Repair if necessary will take a day. Yes, we're open today.