1997 Mazda MPV 2.5L TDI

rmpmla · 09-07-2008

dvldoc and Terry Syd, thanks for the quick reply.

I have not yet inspected the check valve. But I already tried this:

Removed the nozzle from the T union split and activated the pump - water flows out after the T Union split.

Connected one DO1 nozzle from the T union split and the other end closed. Activated the pump - Water just barely dripping from DO1 nozzle.

Connected the old DO2 nozzle from the T union split and the other end closed. Activated the pump - Mist spray was coming out.

Was thinking if the check valve is clogged, how come it is working on a DO2 nozzle?

Anyways, will follow your suggestion of inspecting the check valve.

Dust · 09-08-2008

Sounds like the nozzle is clogged. Since you have another nozzle, try to exchange the parts between the nozzle. Meaning see if the nozzle will work with the DO2 filter, or the insert, ertc.

rmpmla · 09-08-2008

Hi Dust,

Yup that seems to be the case. Never thought of switching parts but that would be a good idea to determine what part was affected.

Right now, I revert back to post turbo DO2 nozzle and its working fine again. I guess I'll just stick to this set up for a while. Will post DO1 nozzle update later.

Skodavrs · 09-08-2008

a suggestion - if the water used was "hard" (had calcium salts in it), a soak in household vinegar would help clear the nozzle out without damage.

Dust · 09-09-2008

I bought an extra elbow and hose barb adapter to hook up to the extra washer pump i have in the apartment. It's a simple way to check the flow.

rmpmla · 09-28-2008

Sorry for the late update

Actually, I've disassembled one of the DO1 nozzles and found some sticky black dirt which i would supposed are residues of the EGR. I could have cleaned both DO1 nozzles and re-installed it back but I don't want the hassle of cleaning it periodically.

I've been using the DO2 post turbo nozzle without clogging problem. Hence I'll stick with this set up.

Here are the pics BTW.

Inside the nozzle, you'll notice the slits with black residue.

The black residue has accumulated on the slits of the brass insert. The insert was cleaned already when the picture was taken.

Here is the filter.

Guys, thanks for the reply.

dvldoc · 09-28-2008

I think the cure would be to relocate right after the air cleaner away from the EGR because the debri is comming through the front of the nozzle.

prandyulo · 09-28-2008

What is that small plug beside the nozzle and filter? I don't remember having one in my kit.

rmpmla · 09-29-2008

Quote:

Originally Posted by prandyulo

What is that small plug beside the nozzle and filter? I don't remember having one in my kit.

It's inside the nozzle.
Once you remove the filter, you can then take it off. But you have to take note of its orientation when you put it back. The two slits must go first into the nozzle.

thornbma · 10-17-2008

HI, you've got some very impressive figures from the dynomometer runs. Can you tell me, please, if you had the same fuel setting for the Baseline and Water runs, and did you make any adjustment for the two alcohol runs?

I'm looking at WI more for economy than absolute power - in a LR 110CSW with a 300Tdi, you can't be a boy racer -and I'm often heavily loaded. If the same fuel rate is giving that extra power, due to more efficient combustion, it must give higher mpg.

Any info will be very welcome,thanks.

09-07-2008	#41 (permalink)
rmpmla Water Injection Year: 1997 Make: Mazda Model: 2.5li TDI MPV Join Date: Feb 2008 Posts: 26	Re: 1997 Mazda MPV 2.5L TDI dvldoc and Terry Syd, thanks for the quick reply. I have not yet inspected the check valve. But I already tried this: Removed the nozzle from the T union split and activated the pump - water flows out after the T Union split. Connected one DO1 nozzle from the T union split and the other end closed. Activated the pump - Water just barely dripping from DO1 nozzle. Connected the old DO2 nozzle from the T union split and the other end closed. Activated the pump - Mist spray was coming out. Was thinking if the check valve is clogged, how come it is working on a DO2 nozzle? Anyways, will follow your suggestion of inspecting the check valve.

09-08-2008	#42 (permalink)
Dust Alcohol Holic Year: 1999 Make: Daihatsu Model: Move Join Date: Mar 2007 Posts: 337	Re: 1997 Mazda MPV 2.5L TDI Sounds like the nozzle is clogged. Since you have another nozzle, try to exchange the parts between the nozzle. Meaning see if the nozzle will work with the DO2 filter, or the insert, ertc. Last edited by Dust; 09-08-2008 at 10:03 AM.

09-08-2008	#43 (permalink)
rmpmla Water Injection Year: 1997 Make: Mazda Model: 2.5li TDI MPV Join Date: Feb 2008 Posts: 26	Re: 1997 Mazda MPV 2.5L TDI Hi Dust, Yup that seems to be the case. Never thought of switching parts but that would be a good idea to determine what part was affected. Right now, I revert back to post turbo DO2 nozzle and its working fine again. I guess I'll just stick to this set up for a while. Will post DO1 nozzle update later.

09-08-2008	#44 (permalink)
Skodavrs Water Injection Year: 2005 Make: Skoda Model: Fabia vRS VAG1.9PD Join Date: Aug 2008 Posts: 25	Re: 1997 Mazda MPV 2.5L TDI a suggestion - if the water used was "hard" (had calcium salts in it), a soak in household vinegar would help clear the nozzle out without damage.

09-09-2008	#45 (permalink)
Dust Alcohol Holic Year: 1999 Make: Daihatsu Model: Move Join Date: Mar 2007 Posts: 337	Re: 1997 Mazda MPV 2.5L TDI I bought an extra elbow and hose barb adapter to hook up to the extra washer pump i have in the apartment. It's a simple way to check the flow.

09-28-2008	#46 (permalink)
rmpmla Water Injection Year: 1997 Make: Mazda Model: 2.5li TDI MPV Join Date: Feb 2008 Posts: 26	Re: 1997 Mazda MPV 2.5L TDI Sorry for the late update Actually, I've disassembled one of the DO1 nozzles and found some sticky black dirt which i would supposed are residues of the EGR. I could have cleaned both DO1 nozzles and re-installed it back but I don't want the hassle of cleaning it periodically. I've been using the DO2 post turbo nozzle without clogging problem. Hence I'll stick with this set up. Here are the pics BTW. Inside the nozzle, you'll notice the slits with black residue. The black residue has accumulated on the slits of the brass insert. The insert was cleaned already when the picture was taken. Here is the filter. Guys, thanks for the reply. Last edited by rmpmla; 09-28-2008 at 02:58 AM.

09-28-2008	#47 (permalink)
dvldoc DevilsOwn Staff Join Date: Apr 2005 Posts: 2,074	Re: 1997 Mazda MPV 2.5L TDI I think the cure would be to relocate right after the air cleaner away from the EGR because the debri is comming through the front of the nozzle. __________________ Currently deployed to Ramadi 1 battalion 12th Marines Task Force MP

09-28-2008	#48 (permalink)
prandyulo Water Injection Newb Year: 2000 Make: Mitsubishi Model: Pajero Join Date: Jun 2008 Posts: 7	Re: 1997 Mazda MPV 2.5L TDI What is that small plug beside the nozzle and filter? I don't remember having one in my kit.

10-17-2008	#50 (permalink)
thornbma Water Injection Newb Year: 1991 Make: Land Rover Model: Defender 110CSW Join Date: Oct 2008 Posts: 5	Re: 1997 Mazda MPV 2.5L TDI HI, you've got some very impressive figures from the dynomometer runs. Can you tell me, please, if you had the same fuel setting for the Baseline and Water runs, and did you make any adjustment for the two alcohol runs? I'm looking at WI more for economy than absolute power - in a LR 110CSW with a 300Tdi, you can't be a boy racer -and I'm often heavily loaded. If the same fuel rate is giving that extra power, due to more efficient combustion, it must give higher mpg. Any info will be very welcome,thanks.