Thread: 3.5efi dropping cylinders!!!!

Really Discowhite it could be anything.
You have a 14 CUX if its the Disco you are talking about and they are very reliable.

1 dirt /water in fuel . Maybe whack a bit of metho in the tank.
2 plug lead/rotor/ dizzy cap- replace
3 TPS- test with multimeter
4 Haven't got a K&N I hope. If so clean MAF and ditch K&N
Regards Philip A

<div class='quotetop'>QUOTE</div><div class='quotemain'>1 dirt /water in fuel . Maybe whack a bit of metho in the tank.
2 plug lead/rotor/ dizzy cap- replace
3 TPS- test with multimeter
4 Haven't got a K&N I hope. If so clean MAF and ditch K&N
Regards Philip A[/b][/quote]

yep its 14cux.
1. just cleaned tank, new filter and had injector off car cleaned 1500k's ago.
2 plug leads are new so is the rotor and cap. roving mech services installed a new ign module(back on the dizzy) 6 months ago.
after all that it was the coil/base plate thingy in the dizzy that died!
now new.
3 i'll test at work tomorra!
4 std paper element new after all the dust from watagans 3 weeks ago.

it all started after all that dust, it was really thick. you can see dust marks on the inside of the intake tubing after the MAF meter. not good.

how do you clean the MAF??
im just stumped because everything i try/test is ok??
phil.

8) phil, i clean the maf with carby cleaner pressurepak, sounds like you have the desease my disco has.
when it runs rough now i just select neutral, turn the key off wait a little bit and restart, all this while still rolling - remembering that the road must be straight - or the steering might lock!

Gezz, what causes invalid session ?
Grrrr
once again
Make sure genuine rotor. should cost about $30
Clean MAF with no residue electronic cleaner from Jaycar. Spray into little hole and you will see 2 wires there.

If seems regular miss on one cylinder, identify cylinder by removing plug leads one by one until no extra miss. make sure you ground plug lead or you will blow up amplifier. 14CUX will compensate of course but you will notice a difference on a good cylinder.
Swap plug, if no change, swap wire, if no change suspect injector.
swap injector, as many die in cleaning. I lost 3.
Could be injector, injector plug or loom. plugs sometimes break wires at top. If little square gasket not fitted, then water can corrode contacts.
If you do not find it then get can of petrol, pour on car and light.
Regards Philip A

i have just had what sounds like the exact same problem with my '89 3.5.
After replacing just about everything ignition wise, i still had problem and mine being duel fuel it wouldn't run on gas.
Finally took it to Smithy's in Bayswater thinking it had to be conected to the gas.
And.......
It was the rotor earthing out onto the block.
I had put in an aftermarket rotor and cap from repco.
As soon as they put in the genuine ones (read expensive ones) it ran perfect.
So check the voltage coming out of your coil and then check whats coming out of your spark plug leads. They sould be very close.
It took 6 weeks and 3 mechanics to find my problem.
Sounds unbelievable but true that somthing so small and non genuine can cause so many problems.
Hope this helps.

Alex

Aftermarket rotors buttons often cause problems on these engines.