E85 softtop motor diagnosis

Discuss problems you have had or are having with your Z4
Post Reply
Richardlj27
Newbie
Newbie
Posts: 3
Joined: Sat Feb 09, 2019 2:13 am

E85 softtop motor diagnosis

Post by Richardlj27 » Sat Feb 15, 2020 3:29 am

E85 3.0si top goes down quickly but struggles to come up.I have to stop several times and also pull to reach latch motor and experiencing some hydraulic fluid on the ground

User avatar
Smartbear
Lifer
Lifer
Posts: 9883
Joined: Wed Feb 05, 2014 6:54 pm
Location: In a barn

E85 softtop motor diagnosis

Post by Smartbear » Sat Feb 15, 2020 9:00 am

Sounds like you have a leak.
Rob
Image

e89 Sdrive 20i, plenty of mumbo & good economy-the thinking bears z4 :P
e89 Sdrive 30i, this ones busted, pass me another...
e85 3.0si, i foolishly sold my trouble free car...

User avatar
colb
Member
Member
Posts: 105
Joined: Wed Nov 13, 2019 9:45 pm
Location: Newport, South Wales UK

E85 softtop motor diagnosis

Post by colb » Sat Feb 15, 2020 11:05 am

Time to pull it out and move it to the boot, if you are seeiing oil loss is it showing up outside the car below the motor drain? First check would be to remove the small access panel in the rear wheel arch and have a look inside the cavity and poke the drain through the rubber valve that is plugged onto the drain outlet. Oil here would confirm you have a leak. The motor and pump need pulling out to check it and the pipes from pump to rams. Have seen a couple of people who have found the pipes split or the ram leaking. If its the latter then roof has to come off to get the ram out. Look on the bright side moving it to the boot will prevent it drowning in the future.
Z Shed Cymru member
1999 1.8 Z3
2003 2.5 Z4
1998 Honda Deauville 650

User avatar
Sidewaze Samm
Member
Member
Posts: 660
Joined: Wed Feb 07, 2018 1:11 pm
Location: Sth. Manchester/Cheshire border

E85 softtop motor diagnosis

Post by Sidewaze Samm » Thu Feb 20, 2020 10:50 am

The hose fittings are made of mild steel that, given the propensity for water to collect in the wells due to blocked drain holes, can rust through.
Be careful - if leaking fluid comes out of the drain holes (on either side of the car) which are just in front of each rear wheel...

Hydraulic fluid + turning wheel under load = ditchfinder.

If that's your problem, it's possible to replace with stainless.
2006 2.5si E85
Black Sapphire, Dream Red heated Msports, Sterling Grey grilles and German Grey 106s.
MFSW, cruise, auto lights/wipers, PDC, deflector and cupholders.
ZHP, no CDV, stubby, DLV box and Pure DAB.

User avatar
colb
Member
Member
Posts: 105
Joined: Wed Nov 13, 2019 9:45 pm
Location: Newport, South Wales UK

E85 softtop motor diagnosis

Post by colb » Thu Feb 20, 2020 11:08 am

There seems to be quite a few roof pump/motor problems cropping up at the moment, where can you source the stainless fittings for the pump lines should anyone need to replace theirs?
Last edited by colb on Fri Feb 21, 2020 11:14 am, edited 1 time in total.
Z Shed Cymru member
1999 1.8 Z3
2003 2.5 Z4
1998 Honda Deauville 650

User avatar
Sidewaze Samm
Member
Member
Posts: 660
Joined: Wed Feb 07, 2018 1:11 pm
Location: Sth. Manchester/Cheshire border

E85 softtop motor diagnosis

Post by Sidewaze Samm » Thu Feb 20, 2020 3:40 pm

I know Ducklakeview supplies them, in St Helens.
2006 2.5si E85
Black Sapphire, Dream Red heated Msports, Sterling Grey grilles and German Grey 106s.
MFSW, cruise, auto lights/wipers, PDC, deflector and cupholders.
ZHP, no CDV, stubby, DLV box and Pure DAB.

Post Reply