GuyZ,

 

I desperately need someone's help to sort out my Zed's timing. I have the sneaky suspicion that ever since Nelson replaced the timing belt the engine works in a different time zone (hence my detonation problem). However, Nelson claims that they don't have the equipment to work on my Jap spec TT ... (idiots)... but is willing to "try" it manually - need to book it in for the day and they'll charge me £45 + VAT per hour for the privilege.

Can anyone help me. I'd be willing to travel a bit outside of the Midlands to sort this out.

 

Many thanks!

 

Danny

is it the ignition timing you require checking?? that is a 2 minute job to check and if you don't live too far away I could check it art for you. I live in s/yorkshire.

 

 

Okay, I'm defo confused now ... How many different types of timing can be checked? I'm quite sure that the stock TT should have timing set to 15 degrees BTDC or something like that. If that's called ignition timing then I'll defo take you up on your offer. Where abouts in S. Yorkshire are you m8?

 

Thanks,

 

Danny

If Nelson changed the timing belt there is potential for the cam timing to be out, that can result in expensive noises of metal vs metal as the pistons and valves interact ! However, that is unlikely to be the case (I hope).

 

Ignition timing is a whole lot easier and takes 5 mins with a timing light and at worst a twiddle of the CAS.

Danny,

 

Does this detonation stop after the car has warmed up? If it does then my Z is in the same state as yours and would like syko to take a look too if it's not too much trouble)?

 

Cheerz,

Van

there is the cambelt timing which if youv'e had it changed could be one tooth out if not done by a competent person.

I live in .......Barnsley old pall, somebody has to!!!

And I forgot ...

 

Excuses about not having the tools to work on a Jap import car is complete and utter freakin bullshite.

Thats funny Andy, I was about to say the same thing.. Lying Nelson bastards...

 

Ooooh they make me

 

Az

Danny if you want the timing checking you can catch me in my garage on saturday as I've a few cars to look at and it wouldn't take long to set your timing or anybody elses whilst i'm at it.

plus its a good excuse to meet some fellow Z owners.

Syko - thanks for the offer mate - I think I will take you up on it. However, this weekend is out of the question as I have other obligations further south of Birmingham. If I'm not mistaken, the girlfriend is going to stay with her mum the following weekend - could make it then ... Barnsley eh?! ... that's about 2 to 2.5 hours north from Birmingham. No probs!

 

Van300 - No, I'm afraid my problem is opposite to yours. All is "relatively" okay and quiet when cold and warming up, but once warm it rattles a lot under light load (i.e., cruising at motorway speeds). It is particularly audible between 2000 and 3000 rpm. Another funny thing is that it only seems to happen in the top gear (i.e., overdrive). If I disengage OD then it is quiet again - maybe the engine noise from the increased revs drone out the noise from detonation ...

 

Okay, I'm really off to bed now - girlfriend is looking rather cross at the moment ...

 

Good night!

 

Danny

 

 

Danny,

 

Just a long shot but...could it be that you have a misfire? Check if any of your spark plug coils/harness/connection thingy majiggy are loose.

It sounds like my misfiring problem I had when one of the connectors loosened and I was working on five cylinders for two bloody weeks.

Actually, I've just read your probs again and I'm pretty sure one of your cylinders ain't workin' m8. Does the car vibrant or seem to vibrate at idle and when acceleration slowly does the car vibrate? If so, I've had exactly the same problem-loose connection. Push all your spark plug/wiring harnesses in. I'm sure that will sort it out.

 

Good luck,

Van

 

PS Syko, does my car need the timing adjusting since it only detonates when cold? the car is running with magnatec (10/40)oil if that helps.

Van,

 

Cheers for that mate, that's EXACTLY what my car was doing before local Nelson, Middlehurst and SE...which is why I've stuck to my guns about having the wiring loom replaced. Confident that my car will be much better when I go down to pick it up!

 

Nelsons are WANKERZ where the Z is concerned and after reading what Danny said about them spraying Mr. Sheen in the engine bay to stop fan belt squeal I am more convinced than ever!!!

 

 

 

Van,

 

Cheers for that mate! I will have a look later this afternoon. I seem to remember that I pushed in all the connectors ontop of the plenum a little while ago but that didn't seem to make a difference.

 

I'm about to place an order at Courtesy Nissan for some PFR6B-11B sparkplugs and will see if I can order new connectors at the same time.

 

Syko - I'd still like to have you look at my timing if that's okay. Will let you know when the g/f is out of town...

 

Thanks again guys!

 

Danny

 

Danny,

How far south do your obligations take you this weekend ? If you're getting near the Herts/Essex border then I could help you out with the timing.

...armed with Techtom and timing light...you are Timing Man...was gonna suggest a Techtom session.

 

Hey Danny, I know you've got obligations to the Mrs Danny and all that, but if your car is detonating I'd get it checked out sooner rather than later mate! Just some friendly advice!

 

 

 

Thanks guys!

 

Andy - I'll be going to the Gloustershire area (Evesham). However, I'll need to go to London later next week and could make the trip to Hertz/Essex. I'll let you know.

 

Cheers

 

Danny

Timmy - Techtom isn't any help for setting the mechanical timing (i.e. moving the CAS) - it'll always show 15deg when the ECU is on the base maps (i.e. idle) no matter what the CAS is actually set to...

 

Thats why moving the CAS actually makes a difference

 

Az

So what you saying matey? That ol' TechyTom will always show 15D's BTDC then??? What's the use in that then? ARSE!!!!

 

 

 

The Techtom will effectively display the offset, as set by the ECU, from the base setting. That you do with the timing light.

Danny,

I'm off work next week and will be around between Monday-Thursday.

OFF WORK?

 

You lucky, lucky geeZer!!!

 

Re-read my post Timmy m8 I said "15deg when the ECU is on the base maps" - i.e. when it hasn't advanced/retarted the timing any..

 

EG - Set your CAS to 15 deg (as shown on the pulley wheel).. Techtom displays 15 deg at idle..

 

Rev the car or drive it, the techtom display willchange from 15deg to whatever the ECU has altered the timing too.. does that make sense? No probably not..

 

Oh well it makes perfect sense in my head!

 

Az

 

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Stage: Rather Ill

You bake my noodle...I'll bake yours back with dumb animal questions matey!

 

So what you're saying is...that the Techtom will always show 15 degrees BTDC at idle, even if his timing is out?

 

And that the Techtom doesn't read the CAS timing output?

 

So the only way to tell if Dan the Mans' timing is out is with a timing light and a cup of strong tea with 2 sugars...semi-skimmed milk etc.

 

Sorry Az, I can tell you where you can get cheap lager and you can tell me about Z timing mate...but you will come out of the conversation with far more wiseness than I!!! LMAO!

 

 

[This message has been edited by Timmy_Turbo (edited 11-10-2001).]

Tim,

The Techtom will always tell you what the ECU thinks the timing is. If you have set the offset wrong, via the CAS, then it's your own look out ! The CAS won't really have any sensible output, just a pulse, that tells the ECU where the crank is. It's just a tarted up (expensive) distributor really !

It's all wasted on me mate, when people get in my car and say "what's that thing?"

 

"oh and you can only get them from America..." which will get knickers off faster than a man with artificial legs approaching the ground after a bungee jump!!! ROFLMFAO!!

 

 

[This message has been edited by Timmy_Turbo (edited 11-10-2001).]

Lol Tim you crack me up m8..

 

As Andy says, at idle the ECU always "believes" that the timing is set to 15deg BTDC, hence it displays that on the Techtom... Now, the CAS could be cranked round so you're really running 30degrees of advance for all the ECU knows.. It assumes that your CAS is in the right place..

 

Basically the CAS is there to set the timing, just like (Andy says) the distributor on an old car, where you move it round to set the timing.. However..

 

The ECU can "play" with this timing, either advancing it or retarding it relative to what the CAS is set to..

 

But because the "standard" is 15deg, thats what the Techotom shows - would be a bit daft for it to show 0deg when your average CAS is set to 15deg, dontcha think?

 

Er.. er.. my head hurts.. Andy, your descriptions are better than mine - I'm giving up now

 

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Stage: Rather Ill