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cosworth no pulse from injectors?

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Old 20-08-2015, 05:09 PM
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wheelwizardrefurbs
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Default cosworth no pulse from injectors?

hi folks does anyone know what would cause no pulse at the injectors on my cossie? ive got fuel up to the rail ive got a good spark ive got all the wiring plugs on the correct way. i do have power at the injectors but will not pulse when cranking its got me baffled! any help on this will be greatley appreciated. thanks
Old 20-08-2015, 06:57 PM
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anybody have any ideas? cheers
Old 20-08-2015, 08:08 PM
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Originally Posted by wheelwizardrefurbs
hi folks does anyone know what would cause no pulse at the injectors on my cossie? ive got fuel up to the rail ive got a good spark ive got all the wiring plugs on the correct way. i do have power at the injectors but will not pulse when cranking its got me baffled! any help on this will be greatley appreciated. thanks
Is power present at the injectors?
Martin
Old 20-08-2015, 08:55 PM
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Have you got your earths all on with good contact
Old 20-08-2015, 09:12 PM
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hi lads yes i have power at injectors but they just wont pulse. i have X2 brown earths which are bolted to my inlet manifold how many more is there mate?
Old 20-08-2015, 09:44 PM
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Verify the the Phase sensor output is ok...

Martin
Old 20-08-2015, 09:48 PM
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im not sure mate i will be checking that tomorrow morning and il report back to you, thanks for the replies
Old 20-08-2015, 10:06 PM
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2wd on the throttle bracket and 4wd on the back of the plenum ,two on the same connection .
Check if you had the wiring loom disconnected that you have the plugs on the right sensors as they can be switched easily enough
Old 21-08-2015, 10:15 AM
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I have put a new crank sensor on and its now pulsing but very weak it juat manages to light the bulb. still wont start. Fuel pump is working and got a spark. Cheers

Last edited by wheelwizardrefurbs; 21-08-2015 at 10:25 AM.
Old 21-08-2015, 01:31 PM
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The car now tries to fire but will not start grrrr!
Old 21-08-2015, 05:42 PM
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the phase sensor wiring looks rough as f:@k also would this stop it from starting up and getting a very weak pulse? also when i first crank it over it will pulse bright then immediatley dim to the point where its barely visible.
Old 21-08-2015, 06:01 PM
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one more thing, when i use the test light on the X2 injector wires they are both constant live is this normal? ? with (ignition on)
Old 21-08-2015, 07:15 PM
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Definitely stick a new phase sensor in it mate
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Old 21-08-2015, 07:39 PM
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will do mate got one on order cheers for that .)
Old 22-08-2015, 12:08 PM
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so do you rekon that a knackered phase sensor would cause a weak pulse?
Old 24-08-2015, 01:56 PM
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New phase sensor fitted No change any other ideas?
Old 24-08-2015, 03:41 PM
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Ok its burst into life but only running on cylinders 1 and 3. The other two cylinders are sparking and pulsing but wont fire.
Old 29-08-2015, 09:25 AM
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Are all four lugs intact on the crank pulley, do you have fuel to those cylinders?

The injectors have a permanent supply, re your question, so this is correct.

Martin
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