Been through everything with my n/a jap import Z

 

I can confirm

 

*no air leaks

*all electircal components ohm test fine, are connecting well and operating correctly.

*cas has to be turned to full advance to have any power. cas has been checked, is no wear to splines or half moons in cam end or cas unit itself.

*using around 50 litres fuel for 300km mixed driving.

*fitted an aftermarket fuel reg, fuel at 43psi when engine cold and barely missing, fuel pressure drops to 40psi at idle when upto temp and missing issues increase.

*fuel filter when emptied can only be described as instant coffee granules in my fuel

*park car outside shops warm, sometimes hard to start and requires WOT to start (new symptom)

 

Apologies for the poor audio from compressing the video, can still hear the missing and sputtering as i go over the one way bridge.

 

I am now thinking injector seals are leaking hence i have to advance it to lean it out.

 

Any other thoughts?

 

[YOUTUBE]-jig_7HSFjI[/YOUTUBE]

*cas has to be turned to full advance to have any power. cas has been checked, is no wear to splines or half moons in cam end or cas unit itself

 

check timing belt (cambelt) hasn't slipped a tooth, you will get sputtering / misfire issues with incorrect timing.

*cas has to be turned to full advance to have any power. cas has been checked, is no wear to splines or half moons in cam end or cas unit itself

 

check timing belt (cambelt) hasn't slipped a tooth, you will get sputtering / misfire issues with incorrect timing.

 

I checked the line up of the cams and they are all in line with backplate as best as they could be for a non genuine belt.... is there an easy way for me to check the bottom end timing without yanking the pulley to see the indents in the crank belt pulley? wanting to do a mechanical check as opposed to using a timing light as the cas could throw it off.

I checked the line up of the cams and they are all in line with backplate as best as they could be for a non genuine belt.... is there an easy way for me to check the bottom end timing without yanking the pulley to see the indents in the crank belt pulley? wanting to do a mechanical check as opposed to using a timing light as the cas could throw it off.

 

Well there is your problem straight away... "non genuine belt" notorious for being crap (not lined up right)... just ask JeffTT , he wont fit anything other than Nissan.

 

My advise would be to get a genuine belt and redo it.

 

best of luck.

As above, with a non genuine belt, you probably havent got all the timing marks on and they are crucial for lining up with the sprockets. The timing marks on the rear plate are for reference points only. If your cas is turned fully then timing definitely out.

I checked the line up of the cams and they are all in line with backplate as best as they could be for a non genuine belt.... is there an easy way for me to check the bottom end timing without yanking the pulley to see the indents in the crank belt pulley? wanting to do a mechanical check as opposed to using a timing light as the cas could throw it off.

 

Cam marks and cam backing plate marks, are there for reference, you need the marks in the timing belt to match the marks on the cam sprockets and lower crank sprocket, they are the key marks, the backing plate is just a guide to get everything in the correct place.

 

Time to do a cam belt change, as above get a genuine one

Thanks for the help guys, i wouldn't have thought a belt would throw it out this far when they are all very close to matching the backing plate, but not quite, i also suspect the engine could be from a 1990 model which has the bad heads,

 

Shook out the fuel filter today after letting it dry up a bit, what came out was almost like clay or the material a mason bee would have in its nest.... all the crud from the bottom of the tank no doubt.

 

So my current to do list then is

 

fuel filter.

 

injector o-rings (for good measure)

 

fuel lines.

 

genuine belt.

 

This really is the wrong car to be a daily driver when i'm unemployed and job hunting.

 

Logic says sell it, but logic is thrown aside when it's a Z... it's a love hate relationship that requires money... and patience. Things i am a bit short on.

 

Ahh well we shall see how all this goes then.

 

What are peoples kidneys worth nowadays?

Matching the marks on the backing plates is one thing, getting the correct mark for the crank is another, you may be as much as a tooth out at the crank which will make all the difference. On a genuine belt there are 5 timing marks to get aligned and if as you say you used a non genuine belt ( no timing marks?) you will not get it timed properly for love nor money as the amount of teeth between each mark is also a major factor.

Sounds like you may need to drain / flush the fuel tank too. Easy job though

Cant help with your problem but damn those roads look good :)

Yeap going to give the tank a good clean out. spotted the timing notch in the crank pulley and when lined up with 0 on the lower cover the cams are all 2 teeth off... to me thats one tooth slipped at the crank end. i'll update with how i get on, can't afford another belt, nothing wrong with this one so i'll just have to tooth count it.

 

- - - Updated - - -

 

Sounds like you may need to drain / flush the fuel tank too. Easy job though

 

Where in NZ are ya? never seen another kiwi lurking here.

This should be an interesting day, right now its all stripped off with the belt off.

 

Pulling it apart is the easy bit though.

Got it all fully apart now no need to have a marked belt as the tooth count is in the manual....

 

Counted the teeth and marked up the belt, about to go put it on.

 

Timing done by last person was off by a tooth at the crank (or it slipped)

 

thanks for the help guys, much appreciated.

 

Mark.

Got it all back together with the fixed timing, purrs like a kitten, no idle miss, no miss anywhere,

 

Oh and it goes much faster :D

 

Thankyou for the help gents :D

nice one . glad u sorted it

Got it all back together with the fixed timing, purrs like a kitten, no idle miss, no miss anywhere,

 

Oh and it goes much faster :D

 

Thankyou for the help gents :D

 

good job mate:cool3: