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Banana engine coolant leak after new water pump

Transit Mk3, 4 & 5(smiley front) Forum. All Transits 1986 - 2000

Banana engine coolant leak after new water pump

Postby circitfied » Tue Apr 07, 2026 5:30 pm

Hi,

I have a 1999 for transit bus, fitted with a 2.5 banana engine. Noticed a coolant leak at the back of the water pump, so I changed the water pump and timing belt. However, I still have a coolant leak. I think it is from the flange pictured. Is this likely and how do you even replace the seal?

Water seams to deep from the area at high revs.

Thanks in advance and apologies for the terrible post.
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Re: Banana engine coolant leak after new water pump

Postby metalworker0 » Tue Apr 07, 2026 8:57 pm

well here's what you have as far as gaskets .. as far as i can help

http://www.catcar.info/ford/?lang=en&l= ... g3MDQrMjcy


all the best.mark
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Re: Banana engine coolant leak after new water pump

Postby circitfied » Tue Apr 07, 2026 9:56 pm

Cheers,

I installed a new gasket too. I'm pretty sure the leak is on the other side of the engine block, where the exit pipe is. It's an absolute pig to access.
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Re: Banana engine coolant leak after new water pump

Postby metalworker0 » Tue Apr 07, 2026 10:01 pm

http://www.catcar.info/ford/?lang=en&l= ... A5NDQrMjcy

more

some seals there .. but not in the parts list
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