Syncro Fuel System - Problems
Syncros have a rear fuel filler going to a plastic saddle tank over the gearbox. The pipe running along the chassis-member under the rear wing to the tank can suffer perforation corrosion, and leak. Other parts fo the filling system can corrode/perish and subsequently leak.
Syncros are also prone to difficult filling and overflowing. This can be for a variety of reasons: overfilling (vehicle not level at pumps); tank-top vent valves sticking/being blocked; breather pipes fretting/perishing and leaking; poorly sealing fuel cap etc. The fuel ends up in the rhs compartment behind the tail-light (snorkel box), chassis frame, under rhs wheel arch etc.
Syncro Dokas (pickups) can also get fuel in the lockers due to overfilling/poor seals around filler tube as well as all the above reasons.
Also, on quality of fuel system components: Problem with new Pearl Products fuel hose
Fuel pump: The syncro fuel pump hangs low under the tank, supported under the (often rusty) l/h tank bracket saddle.
NB. The pump can corrode badly (ally body) and leak.
Check it, look for white powdery corrosion products, if there are any signs of filler (plastic body filler), then it's likely that has been used to patch it up... and could fail & start leaking at any time.
Fuel filter: The 2.1 injected Syncros have a large cannister fuel filter mounted behind the l/h rear suspension tower. It is unlikely it has ever been changed! (Diection of fuel flow is important, should have arrows on OEM replacement part)
See reference to pump support bracket here: Syncro Parts - general
