Member Since: 23 Apr 2020
Location: Cape town
Posts: 6
D3 TDV6 2.7 swings no start
Hi All
new to the forum and require assistance
Bought a D3 as a non runner. Was in excellent condition and was maintained and loved by the family that owned it. Used more of a moms taxi than an off road vehicle.
Started making an awful sound in the engine and was then towed to their mechy. According to the previous owner they would have repaired it if they were to remain in South Africa but they were being moved around in their company and were leaving the country.
I have never worked on this type of vehicle before and when i learned of the body off repair, I almost had a heart attack None the less searched a few forums and found that it can be done from the front end without removing the body which is what we did.
This vehicle had the infamous snapped crank but everything else except for the crank was not damaged.
I decided to rebuild this engine.
Most parts were available here through our local LR Dealer and online via Island 4x4 (UK)
A good used crank was sourced and everything that can be replaced was, including the oil pump.
This leads me to my current situation.
I am getting a strong swing but no start even with the use of "quick start" spray in the intake.
The low pressure pump is pumping fuel to the HP pump. I noticed no revs and checked with live data via a Launch tool and there is no revs picking up there as well.
Checked my crank sensor and there is no signal coming from it.
I eventually had to pull the engine again and replaced the sensor and checked the gap which was 0.5mm which im told is within spec.
Reassembled and back to where I started. Same symptoms......
timing was set with the timing tool and the reluctor wheel was set with LR tool that was loaned to me by the LR dealer
any comments or suggestions would be highly appreciated
thanks
23rd Apr 2020 10:18 am
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4658
If you can obtain diagnostic codes it will likely point the direction, generally speaking though when a crank snaps on these it usually means a warped block. You might be lucky, but I would be fearful your efforts may have been in vain.
Get the codes read with a decent diagnostic tool and post them back here. yµ (idµ - eAµ) ψ=mψ
23rd Apr 2020 2:02 pm
Disco3southAfrica
Member Since: 23 Apr 2020
Location: Cape town
Posts: 6
Thanks for the reply
No errors come up when read using the Launch albeit a simple diagnostic reader.
I've checked after the HP pump and there's definitely no diesel going to the injectors.
Everything points to the crank sensor not giving info to the ECU and then the HP pump to actually pump fuel into the injectors but I would assume replacing it and checking the gap would have solved that.
Could it possibly be an ECU problem?
23rd Apr 2020 2:46 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4658
There has to be Dtc'c logged if there's a fault, so you would be well advised to try another Diagnostic tool.
Given the conditions and experiences your car has been through, there should be a string of faults (mainly ghost) amongst which will be the "real fault"!
Is there fuel at the schrader valve from the lpfp? If there is check the belt on the HPFP is OK and the pump is actually turning. Make the dtc's your priority after checking the above.yµ (idµ - eAµ) ψ=mψ
23rd Apr 2020 3:01 pm
Gareth Site Moderator
Member Since: 07 Dec 2004
Location: Bramhall
Posts: 26701
The fact your getting nothing even with easystart in the intake would indicate some mechanical issue. What are the compression figures like?
23rd Apr 2020 3:26 pm
Disco3southAfrica
Member Since: 23 Apr 2020
Location: Cape town
Posts: 6
PROFSR G wrote:
There has to be Dtc'c logged if there's a fault, so you would be well advised to try another Diagnostic tool.
Given the conditions and experiences your car has been through, there should be a string of faults (mainly ghost) amongst which will be the "real fault"!
Is there fuel at the schrader valve from the lpfp? If there is check the belt on the HPFP is OK and the pump is actually turning. Make the dtc's your priority after checking the above.
This is the oddball issue as there should be some errors you are right which is why i am suspecting an ECU issue. will try another diagnostic tool and revert asap. lockdown and corona virus is not helping us at all.
there is fuel coming out of the schrader valve. i can hear the low pressure pump working.
23rd Apr 2020 3:37 pm
Disco3southAfrica
Member Since: 23 Apr 2020
Location: Cape town
Posts: 6
Gareth wrote:
The fact your getting nothing even with easystart in the intake would indicate some mechanical issue. What are the compression figures like?
Dont have access to a diesel compression tester as Ive generally worked on petrol vehicles and never had the need for one. Will be trying to get one as soon as lockdown starts easing up or may try to source one via an online seller.
23rd Apr 2020 3:41 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10365
make sure the cam sensor is plugged in to the front of the head. (at the side)
23rd Apr 2020 3:55 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4658
The ECU has fairly minimal influence over the operation of the HPFP, if there is fuel pumped into it it has to pump that fuel at high pressure to the fuel rail. Unless the belt is broken or other major internal failure.(unlikely)
I assume you turned the engine by hand after reassembly to confirm the integrity of the timing set up?
Did you use a flywheel locking tool when timing the engine? The ECU will almost certainly not be your problem!! Check the timing again if you haven't already done so. Then check the rear belt operation for the HPFP. Beyond that and without diagnostics, go over your wiring conns and satisfy yourself all is as it should be.
I meant to say earlier do not spray starting fluid into this engine!!yµ (idµ - eAµ) ψ=mψ
23rd Apr 2020 4:06 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4658
Pete K wrote:
make sure the cam sensor is plugged in to the front of the head. (at the side)
Yes, this is easily forgotten about yµ (idµ - eAµ) ψ=mψ
23rd Apr 2020 4:11 pm
KostasA
Member Since: 23 Aug 2015
Location: nairobi
Posts: 286
Disco3southAfrica wrote:
Thanks for the reply
No errors come up when read using the Launch albeit a simple diagnostic reader.
I've checked after the HP pump and there's definitely no diesel going to the injectors.
Everything points to the crank sensor not giving info to the ECU and then the HP pump to actually pump fuel into the injectors but I would assume replacing it and checking the gap would have solved that.
Could it possibly be an ECU problem?
ok just a stupid question, you have checked that the rear belt is in place?
23rd Apr 2020 5:49 pm
Disco3southAfrica
Member Since: 23 Apr 2020
Location: Cape town
Posts: 6
hi all
apologies for the delayed response.
timing was done using the tool and the engine was turned over manually to check for any "kissing" of valves and pistons.
rear belt and tensioner was changed out of desperation with no change in the symptoms.
going to get stuck into it again later this week. will update asap
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None the less searched a few forums and found that it can be done from the front end without removing the body which is what we did.
