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cooch t31
X-TRAIL HOLIC
Date Registered: 06-2008
Location: Blue Mountains, NSW
TOTAL POSTS: 5966
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Re:
Thanks Scott,
Another informative thread.
Glad it all worked out in the end.
--- Tony X-891c
HERE is my D22 Navara
HERE is my old 2008 T31, ST Series1
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26/Oct/2011, 4:58 am
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evorock
X-TRAIL ENTHUSIAST
Date Registered: 12-2010
Location: Rockingham,Perth WA
TOTAL POSTS: 146
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Re: Xtrail Fuel injector rebuild/Cheep Cheep!! DIY and Electrical Pulse UPDATE
Hey all, a quick update when servicing you Fuel Injectors.
I really wanted to be certain my injectors were clean and that the spray pattern was even and the fuel was actually being atomised for the big event.
Had a chat to some guys at Jaycar and they advised that indeed to injectors can be pulsed using low voltage using a very basic circuit.
Combine this with a makeshift Carby cleaner spray pack and your in Business.
Whip down to Jaycar or DickSmith and buy these things (hahaha swear sensor,poor Richard)
- A couple of lengths of thin gauge wire. (Red and Black lengths,couple of meters or so)
- 4 of those little crocodile clips (couple of bucks)
- Some sort of Momentary Switch which you can Voltage Pulse. (ask the nerds, they know, $3)
- A Battery. I used a 6 Volt one out of a lantern but it was almost dead. You could prob use a
new AA or a 9 Volt but whatever you do, dont use a car battery, im pretty sure that it would
send your Injctor pintle into orbit. For our Xtrail Injectors the voltage needed is somewhere
between 1.5v - 9v to fire that pintle safely.
- Super Glue
Then walk into your local chemist, and heres the awkward bit!! and ask for a Plastic Syringe and some razor blades . Wait for Chemists reaction.... laugh... then tell em its nothing to do with anything life endangering..
- Get the 3cc one as the diameter of the hole will fit snuggly over the injector. (0.70cents)
- The razor blades are needed if you need to slice the o'ring a bit for a snug fit.($1.50)
You will need some Carby Cleaner (with the little straw that presses into the nozzle) $12-15
Then make up the small circuit in the pics below and connect you wires to the crocodile clips on both ends.
Take your Syringe and pull the plunger out and discard. Heat the nipple end of the syringe carefully with a heat gun or hairdrier and quickly press the straw into the end while its still plyable. When cooled pour some Super glue around the connection so its air tight and let dry.
Place it all together like this.
Connect you crocodile clips to the injectors elec prongs.(I dont think it matters which way)
Without giving it any power yet spray a small amount of cleaner into the syringe and while under pressure pulse your switch to operate the pintle. It will open the pintle and allow cleaner to spray through the tiny hole and youll be looking for a nice even mist without big drops.
Flip the Injector around and backblush it using same process.
These are not Xtrail Injectors but exactly the same process. Ive picked up a bit of work from people with mechanical probs lately and the guy couldnt afford to have them done professionally.
If anyone wants this done and injectors refreshed, PM me and id be happy to help.
Hope this helps.
--- 2002 T30 Xtrail Ti , White 5Sp
Full engine rebuild, Single Mass flywheel upgrade,
Scott, Rockingham, Perth WA
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6/Nov/2011, 4:41 pm
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cooch t31
X-TRAIL HOLIC
Date Registered: 06-2008
Location: Blue Mountains, NSW
TOTAL POSTS: 5966
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Re:
Cooooool, funny what you can do when all you have to do is ask.
--- Tony X-891c
HERE is my D22 Navara
HERE is my old 2008 T31, ST Series1
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7/Nov/2011, 4:45 am
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jalalski
Date Registered: 02-2004
Location: SUTHERLAND, SYDNEY
TOTAL POSTS: 29100
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Re:
Yeah Dave, and we were wondering what the dealers actually do when they say your car needs an injectors clean, no wonder the K-mart and Chemist next door to the dealer's has their business booming with the supply of 6 volt batteries and syringes. hahahaha
Just kidding Scott, awesome information indeed and thanks for sharing it with us
I will link this post to our collection of DIY Guides as well.
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7/Nov/2011, 7:58 am
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bravehrt17
Date Registered: 02-2012
Location: Cyprus
TOTAL POSTS: 35
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Re: Xtrail Fuel injector rebuild Cheep Cheep!! DIY and UPDATE!
Hello folks!
Since i started reading this forum, i got more enthousiast about my Xtrail, and if i didn't want to separate from it 1 time, now i don't want 10 times!
Also i started reading things abour DIY things, and started exploring the engine
I don't have much knowledge, but i am quite good with stuff like these and elecronics, so i don't have second thoughs to try...Of course some times....tou have to pay double to clear my mess...but it's all in the game
I want to have my injectors cleaned, and the above method is quite impressing for me, and i want to do it...
Problem is, i don't know the excact procedure for getting out the fuel injectors. I suppose i have to disconnect a few things before pulling them out....
Is there information in here about this, or can i have some quick tips (in formal language ) to help me?
Thanks!
Cheers from Cyprus..!
--- Dimitris
X-2269
Nissan X-Trail 2.0, T30, 140bhp, Petrol Engine QR20DE, Automatic Gear Box. Year 2002
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19/Feb/2012, 12:28 am
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evorock
X-TRAIL ENTHUSIAST
Date Registered: 12-2010
Location: Rockingham,Perth WA
TOTAL POSTS: 146
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Re: Xtrail Fuel injector rebuild Cheep Cheep!! DIY and UPDATE!
Hi Dimitris.
Its fairly easy to remove the injectors. I had to think about it a bit because when I did mine I removed the top half of the intake manifold which exposed the fuel rail.
The fuel Rail is held in with two 10mm bolts with a rubber spacer under each bolt that fixes to the lower half of the manifold. Theyll be tricky to get out but do-able with angle spanner or gear spanners.
I wouldnt worry about fuel too much. Maybe just take the filler cap off to release pressure ot let it sit for a while. You could also pull the two fuel fuses 10A,15A in the panel then crank the engine a bit.
The injectors have a circlip around them holding them to the rail. They will act like small missiles when removing so stuff a rag behind them to catch.
Now, the injector, which is held in the rail and the manifold by an oring can be wiggled out for service.
The whole rail wont come out and doesnt need to unless you want to disconnect the coupling(but youll need a tool)
I think your engine is a slightly different setup so if that doesnt work you might have to seperate the intake manifold.
Its not that hard,
- Disconnect battery
- Remove top of airbox to the throttle.
- Remove the cable ties holding the wiring on the manifold and disconnect various sensors to the throttle and manifold ect and mark with paint pen.
- Theres about 8 bolts holding the top half to the lower then it should be free to pull off.
- Fuel rail bolts are now fully exposed.
Keep us informed. Good luck. Its an interesting little project...
Suggestion!! take your injector with you when buying the syringe for a good fit as theres heaps of sizes.
--- 2002 T30 Xtrail Ti , White 5Sp
Full engine rebuild, Single Mass flywheel upgrade,
Scott, Rockingham, Perth WA
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19/Feb/2012, 10:31 pm
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