1993 Mondeo 1.8 petrol RHD
I'll come clean to start with... a while ago I ran out of fuel and have been
told that this can play havoc with the fuel system as it can lead to any
gunk in the tank being sucked into it.
For the last few weeks I (my car!) have began losing power. I could
accelerate to start with but would soon reach a sudden - and quite
definite - speed limit for certain gears, 1st would barely get me past
10mph, 2nd maybe 30, 3rd barely 50, 4th maybe 60 and 5th 70mph tops.
Pressing the accelerator harder would lead to a dull humming noise that
initially had me thinking I had lost a plug. Occassionally the engine would
judder as though it wasn't getting fuel.
Whilst out earlier and in a bad mood I was sitting at 60mph in 4th, foot
absolutely nailed to the floor, when something gave up. I now get a hissing
noise like a leaking air line from the lower left of the engine when I press
the accelerator (I'm in the car here - lower right if looking into the
engine itself), higher revs give a louder hissing noise.
All the problems I have happen while on the move and not when the car is
stationary in neutral (when it seems to rev up just fine). There is no
I have several possible causes given by a Haynes manual -
i) timing belt issue - NO - no backfiring
ii) fuel filter choked - POSSIBLE - full of sh1t from tank after running out
iii) ignition timing - NO - again no backfirig
iv) faulty fuel pump - NO - that's behind me
v) uneven / low cylinder pressure - ?
vi) worn, faulty or incorrectly spaced spark plugs - MAYBE - but doesn't
account for hissing
vii) vacuum leak at the inlet manifold or associated hoses - POSSIBLE -
explains hiss, but should cause backfiring (apparently)
vii) blocked injector - POSSIBLE - but does not explain hissing sound and
should also cause backfiring
ix) brakes binding - NO - they aren't
x) clutch slipping - NO - it is (a bit) but does not explain my problem.
I think I may have several related problems, possibly starting with a choked
fuel filter which has in turn led to other problems deeper in the engine...
If you want then start to laugh, If you must then start to cry,
Be yourself, don't hide, Just believe in destiny.