Eduardo wrote:

So, is not a unknow issue.
Probably our friends of JLR are aware but due the fact that the temps in UK are not so severe, the number of claims are still not growing up to take some action.

Indeed, LR South Africa was even testing a bigger intercooler here a while ago, not too sure what they concluded. Probably that it's not worth it (for them). --
2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear
2015 Range Rover Sport V8 Supercharged



Defender Puma Workshop Manual: https://bit.ly/2zZ1en9
Discovery 4 Workshop Manual: https://bit.ly/2zXrtKO
Range Rover/Sport L320/L322/L494 Workshop Manual: https://bit.ly/2zc58JQ

pope10001 wrote:

When you are starting off with 55C outside air temperature its easier said than done i'm afraid Bruce...

Im sure......

Pete did mention heat soke and I think that this is what could be prevented...... we dont get into the 50's in South Africa but we get close to 50 in some areas...... the guys I have spoken to have experienced this loss in power in areas that usually have temps in the low 30's so I think although the ambient temperature will effect it its not the only thing to effect it. I think driving style plays a big part also.

Naks wrote:

Eduardo wrote:

So, is not a unknow issue.
Probably our friends of JLR are aware but due the fact that the temps in UK are not so severe, the number of claims are still not growing up to take some action.

Indeed, LR South Africa was even testing a bigger intercooler here a while ago, not too sure what they concluded. Probably that it's not worth it (for them).

I quickly spoke to Wimpie Willers who did the testing for them and he also said that it made a difference in the intake temps which inturn cooled the engine better and gave better power delivery in warm weather.

They apparently gave all the results to JLR but they decided (very convenietly) that the test results was "inconclusive"

I gues the okes with thick glases and calculators have the final say.....

newman4x4 wrote:

Check water level, had a client here in France, the car started to mess up like yours about a year ago,loss of power on big hills form time to time. Then it bakame worse until it wouldn't go for 15min before loosing power.

Afther a CO2 test, it was a head gasket gone on cylinder N°1.

Water level was goind down, and evrytime an air buble went past the water sensor, the heat would go up, the gage went very rapidly in the red for a second and went down with engine loosing all power.

Alex.

Drunkenmes wrote:

Unfortunately I have not got to the bottom of the cause of the leak (no visible sign). Head gasket? Air conditioning? This does seem like it may become a common fault.

Quote:

That is exactly where my problems started Naks. Also replaced the cap but it was always a little wet around the cap. Mine started to loose around 200ml of coolant every 5000km or so from about 35,000km onwards.

I had LR agents twice check the cause of the coolant leak but they never found a problem.

According to indi mechanics it is actually quite difficult to pick up the head bolt stretch. Have Schalk do a test on the engine coolant to check for the presence of exhaust gas. This test is not always conclusive but may help.

I am willing to bet that your engine got a little hot (not overheated but just a little hot) which caused the head bolts to stretch resulting in exhaust gasses leaking past the head gasket. This is over pressurizing the engine coolant resulting in coolant being vented from the expansion cap which is functioning as designed.

Healthy engines should not use coolant. Take my R29,550 repair and preventative upgrades bill as a warning and find the cause of your coolant leakage ASAP.

I am so going to get a gas test on the coolant tomorrow just to find out if this is also happening to mine, else a moerse repair bill is coming my way!  --
2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear
2015 Range Rover Sport V8 Supercharged



Defender Puma Workshop Manual: https://bit.ly/2zZ1en9
Discovery 4 Workshop Manual: https://bit.ly/2zXrtKO
Range Rover/Sport L320/L322/L494 Workshop Manual: https://bit.ly/2zc58JQ

Naks wrote:

Drunkenmes wrote:

Unfortunately I have not got to the bottom of the cause of the leak (no visible sign). Head gasket? Air conditioning? This does seem like it may become a common fault.

Hi, I am also losing coolant with no visible leak even when pressure-tested. I was thinking it's just the cap that's loose, but another Puma owner had the following happen to him:

Quote:

That is exactly where my problems started Naks. Also replaced the cap but it was always a little wet around the cap. Mine started to loose around 200ml of coolant every 5000km or so from about 35,000km onwards.

I had LR agents twice check the cause of the coolant leak but they never found a problem.

According to indi mechanics it is actually quite difficult to pick up the head bolt stretch. Have Schalk do a test on the engine coolant to check for the presence of exhaust gas. This test is not always conclusive but may help.

I am willing to bet that your engine got a little hot (not overheated but just a little hot) which caused the head bolts to stretch resulting in exhaust gasses leaking past the head gasket. This is over pressurizing the engine coolant resulting in coolant being vented from the expansion cap which is functioning as designed.

Healthy engines should not use coolant. Take my R29,550 repair and preventative upgrades bill as a warning and find the cause of your coolant leakage ASAP.

I am so going to get a gas test on the coolant tomorrow just to find out if this is also happening to mine, else a moerse repair bill is coming my way!