1.3 bar header tank cap leaking after hard driving
hi, i have a blobeye STI which was tuned in the following stages -
333 bhp - no leaking on standard cap 400ish bhp- standard cap leaking so replaced with STI 1.3 bar cap and problem solved. 450ish bhp - problems back its a genuine cap that cost £45 not long ago at all. Do i need a 1.5 bar one like Cosworth ? Thanks |
I'm running 490 on mine standard cap they 1.3bar caps are a waste of time and only pressurise the system more than it needs.
Could be a problem somewhere causing excess pressure id be tempted to get a sniff test done to rule out a hg on way out. |
Originally Posted by **jay**
(Post 11808206)
I'm running 490 on mine standard cap they 1.3bar caps are a waste of time and only pressurise the system more than it needs.
Could be a problem somewhere causing excess pressure id be tempted to get a sniff test done to rule out a hg on way out. |
Is it over flowing out of the overflow bottle?
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Originally Posted by ScottyPPP
(Post 11809093)
Is it over flowing out of the overflow bottle?
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stick bike pump on top expansion pipe of rad on left side from front, plug pipe you have took off, pressure system with bike pump and leave for a few days longer the better. Take plugs out disable fuel pump and crank engine with tissue paper/blotting paper over plug holes. Make sure no water gets onto paper=no hg problem into bores. I find the stand up pumps with gauge like out of lidl or aldi are good. Dont think you can get borescope in plug holes for visual check. This process should work on scooby
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