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Author Topic: Flat spot  (Read 1585 times)

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i260

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Flat spot
« on: 25 June 2011, 17:14:51 »

ok, so I had a dead spot when I was pulling away out of junctions / roundabouts a bit sharpish (like, foot planted and ..........nothing to speak of).

Thinking it was probably the 50k sparks I changed them and discovered one of the DI packs had given up on cyl no 2 so this was duly replaced and I thought that everything was solved.

Now I have the same problem again.

Any thoughts without stripping the sparks again or speculatively getting the DI pack for the other bank?

Milage is 95k
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feeutfo

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Re: Flat spot
« Reply #1 on: 26 June 2011, 00:58:26 »

Codes? Pedal trick in maintenance under paper clip test.

It will tell you which cylinder.

 ie 0302 means misfire detected on cylinder 2. 0303 miss on pot 3 etc.
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i260

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Re: Flat spot
« Reply #2 on: 26 June 2011, 08:41:11 »

Paper clip test????

 :-?
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blackviper90210

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Re: Flat spot
« Reply #3 on: 26 June 2011, 08:54:33 »

Quote
Paper clip test????

 :-?
http://www.omegaowners.com/forum/YaBB.pl?num=1189022687

Hiya,

All maintenance guides are found on the "Home" page!

Click the link above and this will tell you how to do it

HTH  :y
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i260

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Re: Flat spot
« Reply #4 on: 26 June 2011, 10:00:24 »

oh!

Thanks!!

as a 2.6 then I do the pedal trick then, not the paperclip one?
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i260

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Re: Flat spot
« Reply #5 on: 26 June 2011, 10:36:03 »

Downer (i suppose?!?!) - constant flashing! no faults on the electrical.

I suppose that is a useful test to do occasionally though.

Any other thoughts why I can floor it away and only slowly gather speed until the 4k mark then off it goes. This is not every time but quite often.
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blackviper90210

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Re: Flat spot
« Reply #6 on: 26 June 2011, 11:06:44 »

When was it last serviced?

Have you had any work done on the engine prior tothis happening?
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i260

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Re: Flat spot
« Reply #7 on: 26 June 2011, 12:17:51 »

last serviced about 11k ago in sept last year (yes, service due!) - power loss has been noticable since about Feb / March. (not bothered to really see to it due to job uncertainty)

Cam belt done at service, heater motor and battery changed in Dec when the motor took the battery out when it stayed on overnight!

Otherwise no other work done.

As I said, I am not totally certain it happens every time I pull away but it could be.

When up and running it is fine and flies over 4k.
« Last Edit: 26 June 2011, 12:20:49 by i260 »
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blackviper90210

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Re: Flat spot
« Reply #8 on: 26 June 2011, 12:46:06 »

I'm not a mechanic, but I would def change the plugs & oil as soon as you can to start with.

Ref it picking up and flying around 4k, I believe they all do as that's the power band. Mine does the same and just goes mental around 3.5 - 4k  ;D ;D
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i260

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Re: Flat spot
« Reply #9 on: 26 June 2011, 13:53:35 »

I did the sparks with the DI but to no real benefit (even though the DI pack was leaking stuff).

The service is waiting as there are a number of things that need to be done if I keep it or not at all if it goes which will only be within the next month or two.

Ta.
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feeutfo

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Re: Flat spot
« Reply #10 on: 26 June 2011, 15:02:07 »

Front multi ram not working?
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feeutfo

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Re: Flat spot
« Reply #11 on: 26 June 2011, 15:07:03 »

Quote
I'm not a mechanic, but I would def change the plugs & oil as soon as you can to start with.

Ref it picking up and flying around 4k, I believe they all do as that's the power band. Mine does the same and just goes mental around 3.5 - 4k  ;D ;D
There is a slight step normally, and I mean very slight. Again I would suspect failed front multi ram...? ESP if it's that noticeable.
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i260

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Re: Flat spot
« Reply #12 on: 26 June 2011, 15:36:14 »

mmmm - you may be on to something there.

The take of at 4k is VERY noticable in all conditions.

Exhaust note changes significantly (just put that down to the Eternal Exhaust!)

Off to check 'how 2' guides for overhaul of front multi-ram...
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TheBoy

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Re: Flat spot
« Reply #13 on: 26 June 2011, 15:49:21 »

Given the symptoms, I too would suspect the multirams not working as expected.

Frequently the 1 way valve in the vac reservoir fails, emptying the vac at WOT
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i260

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Re: Flat spot
« Reply #14 on: 26 June 2011, 16:48:50 »

OK.

So having identified the offending item from this 'how2' what do I actiually do to the front ram link to help the situation? Spray it with lubricant or some cleaning fluid or are there service parts?
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