Question about 1992 Geo Tracker

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Takes a long time to start when cold. Start right up when warm.

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Hard starts are many causes.
ill list them in order, stats.
1: never tuned up, or not in last 60k, all this is in the opr. guide, lost it?
2: bad fuel or using summer fuel in winter (winter only car? or stale fuel? not a Year long DD (daily driver:?)
3: ECT reads too low or too high. for reality.
4: what engine?, the 92 comes in 16v and 8v , and are black /white different EFI wise.!!!

the key to finding this is easy. after the tune up , of course.
A: is spark good, when it dont start ( i check it while it dont start easy)
B: are the spark plugs dry or soaking wet ? tips?
if wet, ans spark is good, its flooding
if its dry and spark is good then its weak or no fueling.

just 2 steps and we work the path to the logical conclusions.
(weak spark? ) work that .
weak fueling, ECT reads too high? or low fuel pressure.
or partial clogged injectors?
flooding? well, ECT read too low. (you never stated ambient temperatures when starting, and this one fact can be real important.
its +46F here today( 75 yesterday)
my buddy its -30F, kinda different that....

flooding has many causes, on the 16v motor the 4 injector can leak.

so when engine runs, does the dash CEL lamp go off>?
this lamp must glow key on, if not the ECU is dead.
if not look here.

a dead eCU is called backup mode.
a partial failure is CEL glows all the time., and is in limphome mode.

We start at a tune up. ever skip the 60K ???? miles???? or multiples there off?

Posted on Nov 23, 2013

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