1987 740 Turbo, B230FT engine, LH-Jetronic 2.2 fuel injection, EZ 117K Ignition, manual transmission.
Quiz 1. No Start (revised--the new twist!)
Symptoms: Engine turns over or
cranks, but will not run. Have spark from ignition coil. Broke
open fuel rail and fuel is spewing forth into glass container
on Ignition "Start."
Question: If it's sparking and there's fuel, why won't the engine run?
answer
Quiz 2. Engine runs rough
Beforehand: I had just put on
new timing belt and crankshaft pulley/vibration dampener. Previously,
I had replaced fuel pressure regulator, fuel injection relay,
distributor cap and rotor, and spark plugs in attempts to cure
engine hiccups--all to no avail.
Symptoms: (1) Engine runs rough, especially at idle. Runs
a bit better when driven, but doesn't have much oomph going up
hills. (2) Occasional hiccups, both during idle and when driven.
(3) My wife said, "Your exhaust smells like gasoline!"
(4) Went to check ignition timing with Craftsman timing light.
The timing light didn't work; can't trust those Craftsman electronic
tools!
Question: What's causing the rough idling and hiccups?
answer
Quiz 3. No increased revs when
pressing on accelerator
Symptoms: Just cleaned the throttle
switch and went for a test drive. Didn't go more than a quarter
mile, making a right turn to go up a hill, and car wouldn't go.
Luckily I could pull over to side of road. Engine runs, but when
I press on the accelerator---nothing. No increased revs of the
engine.
Question: What's wrong?
answer