Unlucky8Ball 6 Posted September 5, 2014 I recently bought a cheap rough EFI ZL Fairlane, and the engine bay has a petrol smell to it. Looked around the engine and saw this leak coming out of the piping on the right side of the engine, near cylinder #4 and think it could be the source of the problem. I've never had an EFI Crossflow before, and am not sure what this is. Can anyone name the part it's leaking from? Share this post Link to post Share on other sites
SPArKy_Dave 8,865 Posted September 5, 2014 The part, is a temperature switch for vacuum, likely to control the EGR valve. one of these - http://www.ebay.com.au/itm/GENUINE-FORD-NOS-XW-XY-XA-XB-XC-XE-XF-3-PORT-VACUUM-SWITCH-GT-ESP-V8-BRAND-NEW-/111450802951?pt=AU_Car_Parts_Accessories&hash=item19f2fc4b07 The cast block which it lives in, has coolant running through it. As the coolant heats up, the vacuum switch opens, allowing vacuum to operate the EGR valve, or other device. Trace that black vacuum line back upwards. It looks like oil to me. Share this post Link to post Share on other sites
Unlucky8Ball 6 Posted September 6, 2014 Thanks Dave, traced the vacuum line back up and it went to the fuel pressure regulator, which was leaking and spitting fuel into the vacuum line. Would explain why it was idling rough too with sucking up that extra fuel. Cheers! 1 SPArKy_Dave reacted to this Share this post Link to post Share on other sites
SPArKy_Dave 8,865 Posted September 6, 2014 Good stuff. Sounds like an easy fix! Share this post Link to post Share on other sites
