Tyre Pressure Drop - Ford B-Max Forum
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post #1 of 5 (permalink) Old 20th April 2020, 13:05 Thread Starter
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Tyre Pressure Drop

Back rear tyre always seemed to want an extra pound or two of pressure compared to the rest, but recently, the warning light came on and pressure had dropped to 17 lbs. Reinflated and 2 weeks later. Warning light came on again.

I couldn't see any sign of object penetration but I knew I had an old valve tool somewhere in the garage that I hadn't used in 15 years. A search located it and I gave the valve a slight tighten about a week ago. Pressure has remained up ever since, so it's worth checking the tightness of the valve insert if a tyre is going down before taking it to the tyre dealer.

Sometimes you get leakage around the beading or the valve seat, but not in this case.

B Max Titanium X 1.0 125 bhp in Magnetic with built in SatNav and rear sensors.
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post #2 of 5 (permalink) Old 20th April 2020, 19:31
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Thanks for the tip.

John

Titanium X Tectonic Silver 1.0 125ps Eco.
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post #3 of 5 (permalink) Old 5th May 2020, 01:26
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You can check the tyre valve by removing the cap, wet your finger and wipe it over the end of the valve making a bubble, if the bubble gets bigger it's leaking. Simple .
TheInstructor and notyes like this.

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post #4 of 5 (permalink) Old 7th May 2020, 17:03
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Quote:
Originally Posted by B-Max-Mike View Post
You can check the tyre valve by removing the cap, wet your finger and wipe it over the end of the valve making a bubble, if the bubble gets bigger it's leaking. Simple .
Much the same as round the bottom of your valve itself. Old, simple but effective things like this seem to be lost.

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post #5 of 5 (permalink) Old 8th May 2020, 00:46
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as I remember, mild washing up liquid is an even better diagnostic tool
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