cossie15

iTrader: (1)

Was driving the cossie the other day and suddenly it started to jerk, sounded like its low on fuel. Anyway it then sounded like a subaru impreza, that deep engine sound, its hard to explain. Any ideas???? check all plugs, leads etc but not default found.

mechanic28

iTrader: (5)

does it do it as she comes on boost?

could be a number of things!but when mine started to do it i found it to be the phase sensor to be at fault

S3an

did you remove the dizzy cap, a pain to remove i know but with all the wet and damp moist air it could be that.

col93saphcos

iTrader: (2)

exhaust manifold slackened off?

cossie4i+

iTrader: (15)

As mechanic28 said, does it do it when coming on boost or all the time ?

Steve

cossie15

iTrader: (1)

Nah it does that all the time now, even when you start the car up from cold. Looked at the dissy cap, which is new but no signs of default. any more suggestions guys?

cossie4i+

iTrader: (15)

Try the phase sensor as mechanic28 suggested. If its old the wires go brittle

Steve

martysmartie

iTrader: (1)

It is misfiring, most likely caused by a faulty HT lead, check you have a good spark at all plugs.

Martin

nugnah

try crank sensor

jason

cossie15

iTrader: (1)

Right just checked the following, plugs, leads, dissy cap, points and they where fine. However while the engine was running i disconneted the injector one by one and found that cylinder '3' had no impact. The other cylinders were affected but when it came to this one, no response, not doing anything. It must be this right?????

martysmartie

iTrader: (1)

You mean the rotor arm as they do not have points? Have you checked to see if the faulty injector has power by measuring with a meter or by placing a bulb in the connector (sidelight bulb is ideal) you should see a reading of 12V or the bulb will "Pulse" if so this means power is good and injector is faulty.

More than likely it will be a power issue due to the old wiring breaking, remember injectors run 12V CONSTANT not switched.

Martin

cossie4i+

iTrader: (15)

Correct, make sure it has power going to it or just change 2 injectors around to see if its a injector fault.

Steve

mechanic28

iTrader: (5)

or there is something mechanical at fault on that cylinder

Barry R

iTrader: (3)

i had this trouble and it was a plug at fault switch he plugs and see what happens

martysmartie

iTrader: (1)

Wont be a faulty plug as he has already checked them

Martin

Eagle

iTrader: (2)

fuel filter ? so many people seem to think its a non changeable item if it sound like its running low on fuel ..

Barry R

iTrader: (3)

yeah i checked mine but under compression they failed

cossie15

iTrader: (1)

just checked to see if ive got voltage on that injector and thats fine, not reading 12 volts tho, none of them do. Anyway they are all simular so that must be fine. Goner get a single injector i think?!!!!!

Captain Cotswold

Hmmm... no, you're just guessing, and not reading....

If you aren't reading 12volts at any of em, something's up.

Captain Cotswold

And the 'something' won't be fixed by changing one injector.

martysmartie

iTrader: (1)

Or you could just swap the injector with one of the other three to save getting another one.

Is the car 2WD by any chance?

Martin

cossie15

iTrader: (1)

ye its an 2wd. Will do some more investigation tomorrow!

cossie15

iTrader: (1)

Right just checked the voltage on the injectors, all reading around 12.4 volts which is good. Must of put the multimeter on the wrong setting the other day, thats what happens when your in a hurry!!!!!!!!

martysmartie

iTrader: (1)

Was you using the injector ground to check or another earth? The live isn't usually the problem it is the ground that breaks.

Martin