So tested vacuum pump against a working vehicle.
Both identical in response. For reference the pump pulls 24 -25 in hg Vacuum.
2 stabs on brake pedal reduce it to 15 in hg.
Recovery to 24 -25 in hg takes about 15 seconds.
So, not that. Before turning attention to the brake servo, which held...
I usually just lift air cleaner lid off and let the joining plastic come up in the air and uncouple. Perhaps shoddy !! Only on my cars. If doing a full service it all comes off anyway.
Good questions !
Will get back on those.
I have checked that the servo holds vacuum if left for a few hours, so unlikely to be diaphragm.
Not much in pump to fail though, either works or doesn't I would have thought.
Anyone had a 'weak' pump ??
Thanks
Revisiting this again!
Have MOTd the 2002 TD4 ES for the winter to allow me to do some jobs on the Sport. Headlining etc.
Brakes work fine but running out of servo assistance after 2nd press. Vacuum gauge test shows no leaks and a good 24 inhg on idle.
Press brake and vacuum gauge shows 5 or...
3 door front doors are much longer. In my experience they are a pain to get out of in car parks !!
I have some new 5 door doors or can source 2nd hand ones. What do you need ??
What I can't help with is what happened to the HP pump pressure. You would think it would drop when spraying out the front, but whether it would be measurable.
Have you done HP figures at say 2000 and 3000 rpm and compared with a working TD4 ??
I have fed back to the suppliers many times about the pad holes being in the wrong place.
I use a tank cutter to correctly position them. They overlap with the factory holes but it sits right then.
I think the pattern used for folding and drilling is wrong !!
Repair kit is available to hold the joints together. They work well and are more than a temporary fix...
https://www.ebay.co.uk/itm/142649657918?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=_ejaT64KQiK&sssrc=4429486&ssuid=b5qQSb6hQNK&var=&widget_ver=artemis&media=COPY
Thanks, I'm going to try the in line ally job for a Honda K Series. Stat is replaceable and hence you can change the temp if needed. Also, on an Automatic vehicle it looks like it will fit in place of the top hose joiner and require no hose removal or cutting so re-instatement is simple.
Failed !!
New stat. Short hose off. Plastic pipe corre t diameter to push in. Silicone up.
Spent 2 hours and couldn't get the thing in far enough. It needs to be 25 to 30mm clear to allow the T fitting back in.
No way was it going. Managed about 10mm but nearly gave myself a hernia!!!
What...
Modified mine. Removed fibre board. Made checker plate replacement. Fitted with 4 hex head self tappers into clips on the brackets that held the fibre board. 4 bolts and a lightweight ally sheet comes off.
7,000 miles on
Rears 6.7
Front 6.5
These are lowest measurements across tyre. Interestingly from the centre band.
Must check tyre pressures for this size. Started at 32 psi all round.