I have a 2004 Freelander 2.5L Petrol LH drive. I have been smelling antifreeze in the cab once it warms up. It's not the heater core. I don't see any drips or puddles under the vehicle. I can't see any moisture under hood at all. I do however smell antifreeze on the opposite side of the motor as the resevoir, at the back near the firewall. There is an array of hoses there but i've squeezed them and I can't seem to find out where the coolant is going. I only have to top the resevoir up every 3-4 weeks. Usually get the smell in the cab when engine is under load on take-off yet the windshield doesn't mist up and there's no moisture on the carpet.
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The smell of petrol means that there is unburned fuel somewhere.
That is not good, and could be very bad, especially if it ignited.
I sincerely hope that you are not smelling this inside the vehicle while you are driving it.
Without running through a list of every possibility that I can think of, I'll make some suggestions.
1) When you smell the petrol, immediately pull over and shut the engine off. Lift the hood to access the engine and try to find the leak. Look at hoses, connections, fuel delivery components, gaskets. Look for wet spots, stains, wash marks where petrol may have moved dust and then evaporated.
Patience and a bit of time, and you should find it.
I'm also guessing that this is an external leak since you did not mention lack of power or backfiring.
Another possible is a failed hose connected to the fuel tank, or a faulty tank vent.
It's up to you. You're now detective Sherlock of the Petrol patrol.
Check carefully for fuel leak. If it starts well and then gets worse as it warms up, check coolant temp sensor. May be it just smells like fuel because it misses so badly fuel is not being burnt and floods tailpipe. Check spark at plugs with timing light to avoid sparks where fuel may be present. Weak or irratic spark can be coil/module, crank/cam sensor. Remove plugs to see what they look like or which is not firing.
You have a bad heater hose and it's being pulled in the cab, if your ucky. Otherwise you will have to pull out the heater core and replace it. A new one runs about $75.00 and can be bought at any auto parts store if you wan to try this on your own post here and I will give you the proceedure.
Honestly, if you are smelling coolant in your cab, 9 times out of 10 the culprit is the heater core or a lin in the cab going to the heater core. A coolant line going the the intake would come directly off of the radiator if I'm not mistaken, which is in the front of the truck... and further away from the cab. Instead of using a paper towel, smell the carpet. If you have pets don't let them near the carpet. Anti freez has a sweet taste but is VERY deadly.
It's possible that the heater core is on it's way out but not completely failed, or there could be a leak that only occurs under high pressure (like when your on the interstate).
With problems like this the only sure way is to go to a workshop and get them to pressure test the cooling system, that is if you dont have a pressure tester yourself. Then it should be seen where you are losing coolant. It may leak from any where, hoses, loose clips, even the filler cap. Is there any sign of antifreeze that has dried
hope this helps
You have a coolant leak most likely in the heater core. Try disconnecting your heater hoses and coupling them together, then running the engine to see if the leak goes away. If it does, I would have the heater core replaced.