Possible but highly unlikely.... FWIW, this motor has two timing chains...
the chance of both of them skipping time would be astronomical..... if
either one of them comes out of time, it could be very spendy....
I can only suggest that you start with the basics... a code scan is the
first order of the day to determine if there is a "hard" component failure
or not. If all you see are symptomatic codes, progress onto fuel pressure -
checking with a gauge is much more reliable than watching a spurt of gas
stream out of the Schrader valve - I've seen many get fooled at this step.
If we are getting 35ish PSI and we can bleed a sample off the gauge to look
at it..... step the next (I had a 99 F150 late last week with a fuel pump
that could pump and hold 35 PSI of AIR pressure!!!)...... just when you
thought you'd seen and heard everything there is to see and hear.
If we're still looking good, we check for spark and fuel injector pulse....
doesn't matter which first. A noid light is the best bet for injector pulse,
a powered test light is the next best choice and an incandescent test light
can lie to you because the bulb often can't react quickly enough. Injectors
are ground side switched... that is to say that they receive a constant B+
(that's battery voltage) with the key in run. The PCM switches the ground
circuit open and closed. -
If we are testing spark, we are best using a tester like this
. This style
has lied to me in the past
and I no longer use or recommend them. Since your car uses four coils in a
wasted spark configuration, you will need to test for spark at every spark
plug connection. Clean any debris from the area and inspect each spark plug
well for moisure and crap at the same time. Thos would also be an idela time
to inspect or replace the spark plugs..... if the fuel system is working but
the ignition system isn't we might expect to see wet spark plugs.... if this
is the case, suspect gasoline in the oil and possibly no compression due to
the oil being washed out of the ring lands.
If, for some unGodly reason, we haven't found the cause of our concern by
this point, we can only assume one or more of the following.... we have
plugged cats.... our gasoline isn't as good as we think.... we have a
pooched motor..... or we haven't performed a test step properly using the
And you thought I was just another pretty face...
"Adam" <email@example.com> wrote in message
> We have a 97 Mercury Cougar XR7 4.6 v8, the engine will turn over and wont
> start, if you spray somthing into the throttle body than it will pop out
> the throttle body, could this be the timing chain? Is it possible for the
> chain to slip?