Question about Toyota RAV4

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Oil leak showing on concrete is about 1 teaspoonful. We had to put 750 mls oil in engine. What could be wrong? We have been told that the radiator may be partially blocked and we need a new one? Also the temp guage comes up to 3/4 very fast.

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  • Phyl Finch Oct 08, 2010

    Steve
    Please advise if the diagnosis re the radiator could be correct?
    If the head gasket was blown would it use a lot more oil than 750 mls? We had a service done just three weeks ago and presumed everything was ok.
    Cheers
    Phyl

  • Phyl Finch Oct 08, 2010

    Yes, very helpful as I am 70 years old and people rip me off!!!!
    Thankyou all

  • Phyl Finch Oct 10, 2010

    justasjoe
    We were advised that the radiator could not be flushed as it is built 'sideways' unlike the older ons that were 'up and down'. Do you know if this is true? I am a 70 yr old lady with not much mechanical ability and am sick of being ripped off by garages and all and sundry .
    Regards

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  • Master
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Hello. Regarding the oil leak, it is not uncommon for cars to leak oil as the oil pan gasket ages and deteriorates. If you want, you can replace the gasket with a new one, this will stop the leak.

Regarding the radiator, you could have it flushed. This will remove any partial block and give you a clear understanding of what kind of shape the radiator is in. It is unusual to have to replace a radiator unless the vehicle has over 250,000 miles on it.

Finally, regarding that temperature issue, just replace the thermostat. As these things age they often cause the symptom you are describing. A new thermostat is a ten dollar item, easy to replace. Call your local Walmart auto repair shop and see what they charge. It should be only about $20.00 installed. Joe

Posted on Oct 08, 2010

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  • Toyota Master
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Hi this could be lots of things to cause the temp gauge to rise quickly, the worst scenario would be the head gasket might be blown, there are 3 ways to test this, 1st, check the oil filler cap if it is a gunky beige colour this could be a sign the head had blown, 2nd, run car, open expansion bottle, and sniff it to see if you can smell fuel in it,3rd, compression check pots, get a compression tester, remove spark plug, disconnect leads from coil pack or distributor, turn engine on a few times, and measure the compression between the pots, if it shows low, on one or more the head has blown, the other thing it would use a bit of oil if head gasket had blown as well, the other things it could be , stuck thermostat, run car till it gets hot, squeeze the bottom hose and then the top hose on the radiator, if it is hot in the bottom hose but cold in top, its a stuck thermostat, oil leak could be lots of things, here are some for you to check, rocker cover gasket, cam shaft oil seal, distributor ( if it has one),head gasket, power steering fluid ( check hoses and rack gaiters) this should be enough to get you started...hope that helps

Posted on Oct 07, 2010

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  • steve morris
    steve morris Oct 08, 2010

    hi Phil, obviously without physical looking at it, i am only using experience, i have listed some of the things it could be, other than a blocked radiator, but doing the hot and cold hose test would show the same result, only it would be the other way round hot at the top cold at the bottom, also the hoses would be really hard, as it will build up compression between the engine and the radiator check this as well, as i said, unfortunately without looking at it myself and giving you the correct diagnosis this is just going by experience and working knowledge of the water system, it would how ever be better if it was the radiator and not the head gasket as the difference in price is very different , also yes minor oil loss can be usual depending on the severity of the leak and it can blow any time, a few simple tests can either negate the head gasket or clarify either way...hope this helps

  • steve morris
    steve morris Oct 10, 2010

    yes i know what you mean i worked for such a firm years ago, that's why i left them they were ripping people off big time, just thought as well make sure its not the thermostat, this is a few bucks part, and might be worth you changing that out just to see if that cures the problem... please vote and rate thanks...

  • steve morris
    steve morris Oct 17, 2010

    thats rubbish radiators can be flushed and they are all made the same way, there is no up and down or sideways all radiators are made the same...take it to another garage preferably the company who makes them a main dealer they will help you better

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