2001 wrx low vacum

[WRXONP]

what im trying to explain is that if u see say 12 psi at ur engine (boost gauge on manifold) u will see more if u have it on the wastegate actuator hose due to pressure drop through the intercooler + plumbing (depending where u have the gauge on the actuator line)

[raymong]

will place gauge line to a individual port to see if it makes a difference

how do i tell if the cams are inverted?any markings on the cams themselves?

[Guest]

 raymong said:

will place gauge line to a individual port to see if it makes a difference

how do i tell if the cams are inverted?any markings on the cams themselves?

BINGO ! - IN and EX are clearly marked - you should have seen this upon assembly

[raymong]

they are only marked on the cam gears themselves which i have checked also...

only the driverside (rh) have the same cam gears the only side the inlet is the metal one and the bottom is plastic one

i meant are there actual markings on the cams themselves ..like when i take off the cam cover are there markings on the cams?

[Guest]

YES, the CAMS and the camgears are marked IN and EX

[raymong]

http://www.trademe.co.nz/Trade-Me-Motors/Car-parts-accessories/Subaru/Engines/auction-355264434.htm

just seen on these cams that they have markings on them.

do the v7 ones have the same markings?

[Guest]

Ummmmmmmm YUP !

[raymong]

sweet will have a look tomoro!!! at least i will know if thats the problem...

[Guest]

Cool let me know, model dependant you can check down the breather fittings (removed obviously) and see IN stamped on the top cam

[raymong]

i had the breathers off when heads were off, can see bugger all thru the hole ,will re try anyways

with jack engine up n take the covers 2 check if cant see from breathers

[DRFVDR]

 Ichi Ban said:

Cool let me know, model dependant you can check down the breather fittings (removed obviously) and see IN stamped on the top cam

Now this is handy to know

once again u sharing all the secrets

[raymong]

checked the cams ...all in the right place

check brake vac

fuel reg

still seems like cyc 2 & 4 not running like spark plugs coils or injectors

when u unplug and plug back the coil lead dun seem to make much difference

[raymong]

will check the coils on a spare plug and see if they are sparking..

it almost seems like the spark is being blown out by the fuel...

when u plug in the lead it makes a different noise then goes back to lumpy idle straight away

[Guest]

No meaning to be rude, but think your in over your head

By the sounds of it, it's time to scope the inj and coil patterns out and go from there

Where abouts are you? if ya local I will come help you out

[raymong]

no worries man

just after some advice

will work itself out in time... lol

im in tok...not local sorry

[Guest]

see if someone can scope the injector power feed voltage

had a few cars with poor coomon joints in the power feed to the injectors of late

[raymong]

do i just see if there is power going to the injectors and see if it is within specs of workshop manual specs?

i done the spark test

cyc 2 & 4 has weak spark...hardly sparking compared to cyc 1 & 3 you could actually hear them tick as they spark..

what would you suggest??probe the ecu?its 3 wire plugs im assuming power earth and spark?

[Guest]

3 wire coils

power

earth

and ignition signal for ECU (an earth suppied to trigger power transistor)

Voltage MUST be checked running for inj and these coils

[WRXONP]

y dont u swap the coils around to different cylinders then see if those cylinders are doin the same thing...which would point u towards the coils being dud...if u swap them around and the same cylinders do it then its the wiring or maybe the ignitor?

[Guest]

 raymong said:

i also double checked the sparks again...took off the driverside leads and started it..and it started so its nothing to do with it..so its running on all 4.

Go back to basics - you posts suggest that your not checking properly, or havent checked the basics

What did you fit that wasnt standard when it came apart? cam sprocket ? etc

Comp test - all the same?

check spark and timing of the spark - use a timing light on an extra HT lead from the coil to check - coil scope patterns

Check fuel - pressure - inj scope paterns

Airflow thru the engine - check for rags in intake pipes etc

[raymong]

i have checked everything...from basic to almost pulling engine out again...

all standard cam sprockets

comp test all above 150psi vary in 10 psi

have check for spark but not timing of the spark

has air flow through engine...no rags in intake pipe

[WRXONP]

well u have proved that 2 cylinders has weak spark...ur half way there!!!

y dont u diagnose that some more...have u tryed swapping coils around?? pretty logical idea

[raymong]

i used the same coil and plug and plugged into each cyclinder. and it was 2 & 4 with the weak spark..

so swaping coils not going to make a difference

mite have to put new set of spark plugs in see if any difference

otherwise mite take to auto electricians

[WRXONP]

could this be ignitor?

[Guest]

3 wire coils have internal ignitors