Oil temp sender leaking !

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19 July 2009, 06:59 PM

340BHP-WRX

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Oil temp sender leaking !

Fitted a set of Prosport gauges yesterday and found the oil temp sender that I fitted above cylinder 3 was leaking

Stripped it all back out today,used Loctite lock and seal,tightened the sender up as much as I dare and it still bloody leaks. It's only a little bit but it's definately leaking !

What's the best way of fitting the sender without it leaking ?

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19 July 2009, 07:24 PM

Lord Bass

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PTFE tape

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19 July 2009, 07:25 PM

scoobyc

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Which is it leaking from? The sender or from the adapter into the block?

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19 July 2009, 08:02 PM

340BHP-WRX

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Quote:

Originally Posted by scoobyc

Which is it leaking from? The sender or from the adapter into the block?

The sender. It's a tapered thread. I've tried PTFE tape and with only 1 rap around the thread it will only screw into the adaptor maybe 2 threads before going tight !

I thought the Loctite seal would do it

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19 July 2009, 08:02 PM

mit

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Be very careful when tightening the sender, they shear off very easily!
As above, i used ptf tape, both on the sender and the adaptor.

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19 July 2009, 08:04 PM

C17RPA

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Quote:

Originally Posted by mit

Be very careful when tightening the sender, they shear off very easily!
As above, i used ptf tape, both on the sender and the adaptor.

same here,with no problems

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20 July 2009, 10:09 AM

dunx

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I bought a 2nd hand Defi and it needed three wraps of PTFE to stop it leaking....

dunx

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20 July 2009, 10:47 AM

mit

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You can get different thicknesses of ptfe tape, maybe you have the thick stuff?

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21 July 2009, 10:55 PM

Dutch Scooby lover

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Maybe the hole in the adapter is damaged a bit.
Or the sender is tapered thread, and the adapter has a straight tapped hole.

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22 July 2009, 06:10 PM

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340BHP-WRX

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Quote:

Originally Posted by Dutch Scooby lover

Maybe the hole in the adapter is damaged a bit.
Or the sender is tapered thread, and the adapter has a straight tapped hole.

Thread in adaptor seems ok. The sender does have a tapered thread.

I've been keeping an eye on it and it doesn't seem to be leaking now !

If it seems like it's leaking again i'm going to take it back out and try some PTFE tape again

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22 July 2009, 10:43 PM

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JohnD

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It needs to screw in more than a couple of threads - even with PTFE tape. I had the same problem but eased the tapered thread on the adaptor by drilling and tapping a piece of steel (1/8 BSP?) and screwing the adaptor in and out a lot! This eased the thread and together with PTFE tape, did the job.

JohnD