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Revhead Kev
Date Registered: 10-2006
Location: Mona Vale, Sydney, AUSTRALIA
TOTAL POSTS: 6355
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Re: Starting issues - help!
Firstly, you should not pump the accelerator while trying to start the Xtrail. Our electronic ignition and Engine Control does not need it and could make starting the engine harder.
Secondly, one those times when it was difficult to start, how far did you run the Xtrail the time before it ? Was it just a small distance out of the garage or along the driveway to move it ?
--- Kev X450(c) T30 Guru
03 Titanium Ti T30 Series 1 **MODIFIED**
My Blog
My CarPC Worklog
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24/Jul/2017, 1:44 pm
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Wiz Au
X-TRAIL ENTHUSIAST
Date Registered: 06-2017
Location: Canberra, ACT
TOTAL POSTS: 185
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Re: Starting issues - help!
If you replaced the fuel filter, and it ran perfectly (didn't starve for fuel at high revs) for a while and if jump starting seems to make a difference (higher voltage/more current?), and you have checked the fuel pump relay, then it points to a fuel pump issue, and apparently this in not unheard of in Exy's.
I know this is a PITA, but putting a fuel pressure gauge on the injector line and seeing what the fuel pressure is when it won't start would be a good diagnostic step. But as I'm "old skoool", you may be able to check the fuel pressure using a bluetooth OBD II adapter and a mobile phone app.
--- 2004 T30 series II, Ti (now sold)
JRR50 Pathfinder, QD32ETi Turbo Diesel, with 'lots o fruit'.
2012 Jeep Cherokee KK CRD Limited is current ride.
Will be looking for a white or silver 2011-2013 T31 TL (Diesel) to "pimp out".
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25/Jul/2017, 12:03 pm
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Etay
X-TRAIL NEWBIE
Date Registered: 07-2017
TOTAL POSTS: 7
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Re:
Hey guys,
Thanks for all the replies, I have been working in a remote location so couldn't check your advices
But a couple of things
1. The car still does some issues once in a while, and when it's happening it's stays for a while.
2. I checked the battery, and tried a new different one, still doesn't start
3. When the issue happens, it can happen after a short drive or after a long one, it doesn't seems to be the flooding of the engine.
4. Fuel pressure, I checked it with a gauge, seems to be alright(49PSI), but didn't check yet when the car wasn't starting.
And now for the big thing
I discovered some milky texture in the oil cup, and the engine shakes for 10-15 seconds when I start the car until I rev her up.
I suspect this is a head gasket leak
Some questions
1. Can a fuel pump fail inconsistently?
2. Can the leak in the head gasket cause all this trouble??
3. Did someone used a head gasket seal fluid and lived to tell?
4. Does a blocked fuel filter/bad fuel pump can cause head gasket leak?
Cheers!
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8/Aug/2017, 8:24 pm
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Wiz Au
X-TRAIL ENTHUSIAST
Date Registered: 06-2017
Location: Canberra, ACT
TOTAL POSTS: 185
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Re: Re:
quote: Etay wrote:
..And now for the big thing
I discovered some milky texture in the oil cup, and the engine shakes for 10-15 seconds when I start the car until I rev her up.
I suspect this is a head gasket leak
Some questions
1. Can a fuel pump fail inconsistently?
YES...bad electrical connections or a 'sticky' pump motor. a bit more voltage (>14v vs 12.8v) with a jump start gets it going.
quote: 2. Can the leak in the head gasket cause all this trouble??
YES...if the engine stops with the 'bad' cylinder on the 'intake' stroke it will be in a vacuum state which will suck coolant from the 'water jacket' and flood the cylinder with coolant. I would expect it to be hard to start until all the coolant is cycled out / burnt off but eventually start and run rough for a while, then seem fine.
If the engine stops with the 'bad' cylinder in the Compression stroke, fuel/CO/CO2 gasses will be pushed into the water jacket and into the coolant. This will show up with the colour changing gas analyser used over the radiator cap opening when the engine is running and warmed up. Ignition explosive pressures inside the cylinder are far higher than coolant pressure (.9Bar?) so I disagree that when the coolant gets hot it will pressurise itself into the cylinder. 450psi beats 13psi anyday = exhaust gasses in coolant, not coolant in cylinder. Hence why they have a tool to test for exhaust gasses in the coolant.
quote: 3. Did someone used a head gasket seal fluid and lived to tell?
Never used one. Thought that if it could tell the difference between a gasket leak and a rubber seal in the water pump, it must be magic I don't understand.
quote: 4. Does a blocked fuel filter/bad fuel pump can cause head gasket leak?
Definitely a NO. Well, not really...
Head gaskets fail because of age/deterioration, or overheating creating 'warping' of the two metal surfaces either side of the gasket, or some other problem between the gasket and the metal surfaces (freezing solid of coolant, but your radiator is also toast then)
Unless you had a long term low fuel pressure problem leading to a really lean burn and very high 'engine cooking' temps, the two are not related. I didn't read anywhere you say anything about the temp gauge being on "H" at any time?
Last edited by Wiz Au, 10/Aug/2017, 4:46 pm
--- 2004 T30 series II, Ti (now sold)
JRR50 Pathfinder, QD32ETi Turbo Diesel, with 'lots o fruit'.
2012 Jeep Cherokee KK CRD Limited is current ride.
Will be looking for a white or silver 2011-2013 T31 TL (Diesel) to "pimp out".
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10/Aug/2017, 4:45 pm
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