Patchy's Fawlty Towers risk management. Enter at own risk

[StanTheMan]

Timing belt jumped 6 teeth

I'd definitely determine how the heck that happened !!!


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Time to shoot the Mechanic. Probably sleeping. Spring loaded pulley had moved. Not tightened enough.

[Okibi]

I hope Lucas is helping you fix patchy, he needs it running so he can impress the ladies once he's on his P plates

[93_Clubman]

Well done!

[gslender]

Time to shoot the Mechanic. Probably sleeping. Spring loaded pulley had moved. Not tightened enough.

I guess you could have also quickly picked that up by running a timing light on the engine whilst cranking. It would have shown the timing was out by a fair bit.

I think 1 tooth is about 12 degree, so 6 teeth would have meant that it was a fair way out!!

G

[StanTheMan]

Time to shoot the Mechanic. Probably sleeping. Spring loaded pulley had moved. Not tightened enough.

I guess you could have also quickly picked that up by running a timing light on the engine whilst cranking. It would have shown the timing was out by a fair bit.

I think 1 tooth is about 12 degree, so 6 teeth would have meant that it was a fair way out!!

G

Interesting.

it was running fine, I drove it sat morning it must have slipped & stopped. I rolled it back to my house down the hill.

Then yesterday I had a few kids help me push it back inside the fence as it was outside on the council strip. But I decided to crank it. As I cranked it it started hesitating......as though something was blocking it, which now in hindsight....it probably slipped a little more.
I had expected the tension pulley to make a bit of noise if it was loose. I suspected it But wasn't convinced.
But it turns out I had tightened it. Just not enough. when I loosened it, the tensioner moved right back where its supposed to be.

[StanTheMan]

Time to change the O2 sensor.
Out with the old
& in with the new.
I know it's no big deal. But it's a pain to get to. Even removing the wheel wouldn't have helped. But that wasn't going to happen since I've lost the key to undo the locking bolts.

Had to remove the headers to get to it. But at least in the process I found a missing bolt between the rear pipe & the muffler. It's Also leaking out of that joint. So I gotta find a proper bolt to fix that.

Time will tell if it sorts out the fuel consumption. The petrol fumes have mostly diapered but I thought I could smell something at one stage. It runs smoother slightly more powerful in low rpm. Idles a bit better& exhaust overrun or gurlge when decelerating has also decreased. It sounds as though I've paid big$$$$ to have the overrun .....which is nice. It's prolly a leaking exhaust gasket. LOL

I'm also in the process of cleaning the bonnet from below



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[StanTheMan]

After installing the o2 sensor the engine ran slightly smoother & idlede a little more solid as well.
It was a very small but suttle difference which is great.

However patchy is still usining about 11L on 100 km. in standard form which is pretty much like she is now she used to use between 8-10L

I also adjusted the spring to be a little tighter in the AFM. But its unlikely to make any difference.

I also hardly drive her so that may have something to do with it as well. I think in the last 12 mths shes done less than 3000 km.

The engine.She's been raped & pillaged over the years. But always maintained with good oil & dríven agressively however my driving is smooth rather than rugget.

The engine itselof has also had a hard life.

she was implanted in patchy 120k km ago
She's a 1991 long nose? Not the short nose.
She spent 40k km in a race car doing the NSW production sports for aq few seasons in the early noughties.

Yes I'm paranoid that shes getting old. But the engine just doesn't feel tired.
I j8ust don't know where to start looking or if there is anything of the simple stuff Ive missed?
Compression test?
worn rings?
worn valve guides?

all those things are exy to fix.
but then.....a freshened head would prolly go a long way....and then I may as well just re bore the cylinders since the engine will probably be out.
but I'm really thinking a rebuild is not a path I want to go down.


Discuss. Tell me I'm deluded whatever as long as its true. other things I should be considering.
the basic stuff Ive done.
leads,
sparks
internal engine clean
o2 sensor
checked for exhaust leaks....found one but fixed
adjusted AFM spring. (i know there is only so much I can do with that)

[Rolley]

Have you had the injectors out and cleaned / flow tested?
One or more could be sticking allowing extra fuel through. Alternately it could be a cracked injector o-ring or inlet manifold gasket, letting in extra unmetered air. I don't know how on top of it the NA6 ECU/O2 sensor combo is but it could be richening the mixture to compensate for that extra air?

[StanTheMan]

No,

thank You,
I'll start with the grommets possible they are still original. cant recall if we put grommets in for the injectors when we did the engine swap. Prolly a good chance we did. so they are at least 11 years old....stick a few tankfuls of 98 into it....& get a cost on getting the injectors tested

[93_Clubman]

Hey STM, if you haven't already seen the following guide to leaning or richening the NA6 AFM, it might provide some more scope for adjusting Patchy's richness:
viewtopic.php?f=29&t=59320

[bruce]

Thinking outside the box. Is your odometer accurate ie. is it recording your 100kms accurately, and thus giving you your 11 litres per 100km figure?

[hks_kansei]

Thinking outside the box. Is your odometer accurate ie. is it recording your 100kms accurately, and thus giving you your 11 litres per 100km figure?

That's a possibility.

Different sized wheels/tyres, or a different diff ratio, will change that.

[bruce]

Check it with a mobile phone GPS app.
The only obvious thing is a blocked air filter. I over-saturated a Unifilter with oil once, and it sucked juice.

[StanTheMan]

Thinking outside the box. Is your odometer accurate ie. is it recording your 100kms accurately, and thus giving you your 11 litres per 100km figure?

Ive had the same wheels & tires on the car for a considerable amount of time. So on that part nothing has changed. so I'm doing the same calculation with the same diameter wheels although it would be a tiny bit out as the tires are 205/45x16. but its been like that for......6 or 7 years at least.

Although the speedo might be out......its kind of happened in the last 18 months

[StanTheMan]

Check it with a mobile phone GPS app.
The only obvious thing is a blocked air filter. I over-saturated a Unifilter with oil once, and it sucked juice.

will check that as well.