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Author Topic: Timing marks. abf  (Read 16875 times)

Offline danny_p

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Re: Timing marks. abf
« Reply #30 on: 05 May 2009, 16:49 »
ingnition timeing of the engine cannot be a problem the dizzy is fixed in position and dosent really do a lot other than point the spark to the right cylinder,  it dose have a cam position sensor in, the ingnition timeing is completly under control of the ecu the ecu gets it timeing pulses from the cranck position sensor whitch is nested behing the oil filter and reads a 60-2 toothed wheel on the cranckshaft ( none of this can be adjusted )

it is probaly worth removeing the dizzy cap and cleaning it out  oil can get in there when the head is stored in strange positions other than that

cranck poition sensor is the most liable to fail tho as oil eats at the cable whitch often gives up after been moved around like when the head is removed.
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Offline sleeper16

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Re: Timing marks. abf
« Reply #31 on: 05 May 2009, 17:41 »
but wouldn't the crank sensor cause no spark at all? rather than the timing?


and anyway i can test all these? i have a few spare crank sensors of 8v 1800 digi and k jet engines if they are the same? the cable on it looked in good nick when it was all apart, ill maybe whip it off n do some tests with the meter


one thing i found when looking at the dizzy is with a multi meter im getting no continuity between king lead and number one plug on dizzy (obviously when lined up)  now i tested the rotor arm and i am getting a resistance reading of 900 odd  but then nothing when i put the cap back on, is this right? does the spark 'jump'  i gave it a clean with electrical contact cleaner and then put a little wd40 on see if it helped but still nothing.



« Last Edit: 05 May 2009, 17:48 by sleeper16 »
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Offline sleeper16

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Re: Timing marks. abf
« Reply #32 on: 05 May 2009, 18:11 »
right  terminals 1-2 i get a reading of 4.1 and on my spare one i get a reading of 44 and it continued to slowly rise  and i mean slowly it got to 45 and i got sick of waiting :grin:


bearing in mind my old one wasn't connected to anything  i think there could be a slight issue there



EDIT: sorry should have said i was measuring resistance on the tests
« Last Edit: 05 May 2009, 18:13 by sleeper16 »
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Offline danny_p

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Re: Timing marks. abf
« Reply #33 on: 05 May 2009, 18:36 »
failing cranck sensor can cause all sorts of randomness  thesensor itself rarely fails bu thte lead from it is common fail.   
PB and kr engines don't have cranck position sensors.   PB's do have knock sensors   tho. 

the spark will happily jump small gaps,  it is over 25K Volts.   as long as the rotor arm and dizzy cap arnt burnt or cracked it should be fine.

as for resistance tests they don't really tell you a lot, the cps has +12 and 0v    and then a signal out   will only do anythgin when powerd up
   
« Last Edit: 05 May 2009, 18:40 by danny_p »
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Offline sleeper16

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Re: Timing marks. abf
« Reply #34 on: 05 May 2009, 18:41 »
cool sensors i have are identical to the one fitted with exception of numbers (poss knock sensor ?) as i havnt got them off one came off a ev engine. i cant find any wiring diagrams for the sensor in my haynes should it have a any power to it etc just so i can test this
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Offline sleeper16

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Re: Timing marks. abf
« Reply #35 on: 05 May 2009, 20:12 »
ahh ignore my jobberish, got the sensor off sat down to examine and thought to myself why am i holding the knock sensor? im so blonde at times.


i will check the CPS this time
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Offline sleeper16

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Re: Timing marks. abf
« Reply #36 on: 05 May 2009, 20:57 »
right getting a resistance reading of 1.3 on setting 200M  between terminals 1 and 3
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Offline danny_p

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Re: Timing marks. abf
« Reply #37 on: 05 May 2009, 21:55 »
www.dannyp.info

not done much on it yet but there is an abf diagram and pinout up there.     busy playing with itbs and nasty k series atm
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Offline sleeper16

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Re: Timing marks. abf
« Reply #38 on: 06 May 2009, 15:23 »
right  tests of the CKP are as follows


the plug the blue and brown terminal three is the earth this is correct and connected

terminal 1 this is to number 67 i believe (its as it says on the diagram anyway) all correct and connected red and white i think the cable is this is getting a small resistance reading to earth when ignition is off and im getting nearly 12v when ignition is on

terminal two i believe to be the signal wire from CKP to ecu the only test i have done on this is continuity between the plug and ecu and that's fine

now for tests on the CKP itself

if terminal one and three are live feed and earth then this should be continuous or bring up a resistance reading, i will double check the reading add some power and see if i can get any readings whilst the engine is turning over
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Offline danny_p

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Re: Timing marks. abf
« Reply #39 on: 06 May 2009, 17:19 »
ckp sensor output should look like this on a scope  if your multimeter is fast it may pick it up in the for of a lot of bleeping when set to volts  or a scope meter will show you the trace



i'm wondering if your crancking the enigne over dose the spark seem to dissapar after 5 seconds or so of crancking  ?   
« Last Edit: 06 May 2009, 17:22 by danny_p »
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