good or bad

Ask for and share advice on using the PicoScope kit to fix vehicles here.

good or bad

Postby ecosse » Sun Jan 16, 2011 9:42 pm

car is ford escort 1.6 16v eecv

car is non start

has compresion
no air blocks or leaks
exhaust is not choked
has correct fuel presurre
has good spark
plugs seem wet

this is an injector waveform i took from no1 inj.

my thoughts are that the inj duration is very high i may be wrong though

and was thinking that there is a problem with some input into ecu or ecu itself which is causing this i may be tottaly wrong here

but would like to use the scope to find the fault i am a newbie so please be paitient

if anyone is thinking timing i think the same though would like to use the scope to prove this if i can thanks :D :D
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escort injector non start 2.psdata
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Re: good or bad

Postby Robski » Mon Jan 17, 2011 5:59 pm

I'd say the pulse width is long !

How have you hooked up ?

Those voltages don't look right to me,should come down from Batt V to ground [0V] ??
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Re: good or bad

Postby ProDiag » Mon Jan 17, 2011 6:38 pm

Yes the pulse is around 10 times longer than it should be!

Check your ground reference connection as your voltages aren't correct.

Have you looked at the temperature sensor output?
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Re: good or bad

Postby ecosse » Mon Jan 17, 2011 10:31 pm

yea it seems very stange though have sorted out the issue's with scope now not the car yet and have some good samples they are to big to post here and i have posted them on autonerdzhttp://www.autonerdz.com/cgi/yabb2/YaBB.pl?num=1295217520
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