Vehicle & Technical > Range Rover

POOR STARTING RANGIE 3.9

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JIMBOBLY:

Hi all, I have 3.9 Rangie, starts fine when cold, but is a pain to start when hot, it takes ages, when it does fire it splutters, pops then picks up fine, all compressions are ok, any idea's would be helpful, thanks.

8-[ :angel: :? :^

Range Rover Blues:
Not sure you needed the vote there Jim, but welcome to the club.

Hmmm, doesn't start when hot.

What grade of plugs have you fitted?

Does it run fine once started?

Has it got Cats?

have you serviced it? (air, oil, fuel filters plus cleaned the crank vent filters)

Does it idle smoothly at a constant speed

does it go like stink, or use a lot fo fuel?

Is it loosing water?


You've done a comp test, do a spark strength test when hot, check the leads and the dizzy cap. There ares ome tatty parts out there but TBH it would missfire at high revs if it was one of the commmon ignition issues.

JIMBOBLY:
THANKS FOR REPLYING MATE,I HAVE DONE ALL YOU HAVE SAID,IT GETS SEVICED EVERY 6000MILES,I EVEN CHANGED THE COIL,CHECKED THE CAP AND ROTOR ARM.WHEN THE OLD GIRL IS RUNNING(HOT)IT GOES LIKE STINK,HOVERS BETWEEN 15 AND 17 TO THE GALLON,SO ABOUT RIGHT,THE REASON FOR THE COMPRESSION TEST,WAS I THOUGHT THE CAM MAYBE WORN A LITTLE,ITS DONE 103,000 MILES.ALSO WHEN IT FIRES UP,IT STINKS LIKE IT IS OVER FUELING,BUT MAYBE JUST CAUSE IT HAS BEEN CRANKED OVER ALOT.ITS NOW A CASE OF TRYING THE MORE EXPENSIVE PARTS,SUCH AS THE STEPPER MOTOR,AIR FLOW METER,COLD START INJECTOR,OR MAYBE EVEN THE ECU,WHAT YOU RECKON,AS FAR AS THAT VOTE THING MATE,I DONT KNOW WHAT IM DOING HALF THE TIME,ITS LIKE GIVING A FISH A BICYCLE,HA HA,THANKS,JIM.

Range Rover Blues:
Erratic idle might suggest the idle stepper motor, fuel smell could be a worn injector, TBH the first sign of cam wear is excessive fuel consumption followed by noise at the tappets stop spinning, 15mpg doesn't sound bad.

Here's a thing, the fuel rail can overheat when the engine is stopped after a run, mine are both insulated.  The ECU will run the airconn fans whenthe engine is stationary if the fuel railon the engine goes above 60Deg IIRC.  COuld be you have a heat problem :-k

JIMBOBLY:
i think you could be right mate,about the heat problem,thinking about it more,it isnt as bad to start,perfect sometimes in fact,if i have just stopped it,say at a petrol station,it will fire perfect,leave it more than 10mins,its another story,thanks for youre help,jim. :D

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