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Search: Posts Made By: John Speake
Showing results 1 to 25 of 498
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Forum: 928 Forum
03-29-2024, 07:41 AM
Replies: 5
Views: 437
Posted By John Speake

Yes, it is possible to damage the pot if it is...

Yes, it is possible to damage the pot if it is repeatedley turned against the end of track. If the CO stops changing when trying to set idle CO, don't turn any further.
Forum: 928 Forum
12-20-2023, 12:08 PM
Replies: 54
Views: 4,750
Posted By John Speake

You may know I have 'retired ' from JDSporsche...

You may know I have 'retired ' from JDSporsche and handed the main business over to Mike Parris for MAFS, ECUs etc. These products are available via Roger. The Sharktuner sales and support are now...
Forum: 928 Forum
11-07-2023, 07:00 AM
Replies: 16
Views: 756
Posted By John Speake

LH is the computer that deals with engine...

LH is the computer that deals with engine fuelling. They often fail with time. EZK is the spark computer, they are pretty reliable. They both sit togetther in the passenger side footwell, under the...
Forum: 928 Forum
08-26-2023, 02:01 PM
Replies: 55
Views: 4,657
Posted By John Speake

You really need to retard cruise as well as WOT. ...

You really need to retard cruise as well as WOT. That's because you will be running through much of the rev and load range as you wind open the throtlle to get to the desired rpm and load.

The...
Forum: 928 Forum
06-21-2023, 01:25 PM
Replies: 14
Views: 1,124
Posted By John Speake

Well done, once again, George !!

Well done, once again, George !!
Forum: 928 Forum
05-11-2022, 06:51 AM
Replies: 36
Views: 2,881
Posted By John Speake

I would recommend getting the car on a low loader...

I would recommend getting the car on a low loader to Chris Sanderson of Loe Bank Motors Loe Bank Motors Ltd | Independent Porsche Repair & Servicing North West (http://www.loebankmotors.co.uk/) He's...
Forum: 928 Forum
04-25-2022, 06:11 AM
Replies: 57
Views: 5,077
Posted By John Speake

There isn't a thread on the adjuster. It just...

There isn't a thread on the adjuster. It just turns a potentiometer on the circuit board. It's an electronic adjuster, not an air adjuster.
There is a flexible 'O' ring on the adjuster shaft but...
Forum: 928 Forum
04-21-2022, 06:12 AM
Replies: 87
Views: 14,040
Posted By John Speake

I've only just found this thread as I'm not too...

I've only just found this thread as I'm not too active on here anymore.

Jeannie, you have my most sincere condolences, Dave was a great guy ! Hi memory will lie on with us all.
Forum: 928 Forum
04-14-2022, 11:31 AM
Replies: 11
Views: 2,056
Posted By John Speake

The 6 degrees retard is not applied at idle or...

The 6 degrees retard is not applied at idle or moderate revs at light engine load. It's purpose is the protect the engine from damage at high load and higher rpm if the sensor is detected as faulty....
Forum: 928 Forum
02-23-2022, 01:41 PM
Replies: 52
Views: 3,177
Posted By John Speake

Yes, Jim Corenman in WA is the worldwide agent...

Yes, Jim Corenman in WA is the worldwide agent for Sharktuners. He gives fantastic support as he is a very skilled user. I have retired from JDSPorsche, which is being now run by Mike Parris here...
Forum: 928 Forum
02-23-2022, 06:45 AM
Replies: 52
Views: 3,177
Posted By John Speake

When Temp 2 or its wiring are faulty, the LH...

When Temp 2 or its wiring are faulty, the LH defaults the fuelling to the normal running 80degC settings. This is too weak to start a stone cold car. Unplugging it may work if it's just the sensor...
Forum: 928 Forum
11-21-2021, 06:35 AM
Replies: 7
Views: 755
Posted By John Speake

The wires/pins won't be able to be released from...

The wires/pins won't be able to be released from the housing until you remove their retaining strip (usually white colour ) Then use a normal removal tool to release the connector you want.
Forum: 928 Forum
11-13-2021, 07:33 AM
Replies: 15
Views: 812
Posted By John Speake

Good suggestions Fred. My car had an intermittent...

Good suggestions Fred. My car had an intermittent freeze switch ...
Forum: 928 Forum
11-13-2021, 06:12 AM
Replies: 15
Views: 812
Posted By John Speake

I think you have been given incorrect info. ...

I think you have been given incorrect info. Check out this link: 87-88 Fuse/Relay Chart (928gt.com) (https://www.928gt.com/t-8788fuse.aspx)
Forum: 928 Forum
10-19-2021, 11:27 AM
Replies: 87
Views: 8,870
Posted By John Speake

L-Jet usually has a FP priming sequence.

L-Jet usually has a FP priming sequence.
Forum: 928 Forum
09-15-2021, 05:23 AM
Replies: 12
Views: 376
Posted By John Speake

Do you have spark at the plugs ? What was the...

Do you have spark at the plugs ? What was the last work that was done on the car prior to this problem?
Forum: 928 Forum
09-11-2021, 06:48 AM
Replies: 6
Views: 764
Posted By John Speake

If you're running cams with more overlap and a...

If you're running cams with more overlap and a standard MAF system, the the reversion pulses back up the intake will mess things up. That can't be tuned out.
That's why we developed the Sharktuner...
Forum: 928 Forum
08-24-2021, 04:14 PM
Replies: 25
Views: 1,459
Posted By John Speake

Suggest you compare it with another GT as their...

Suggest you compare it with another GT as their cams do give a rougher idle than (say) an S4. That's why the idle speed is set to 775rpm on the GT rather than the S4's 675rpm.
Forum: 928 Forum
08-13-2021, 06:28 AM
Replies: 55
Views: 4,657
Posted By John Speake

Hi Tony I'm not sure if Louie has this old...

Hi Tony
I'm not sure if Louie has this old stuff since moving to AZ. But Bill Ball who also is in AZ has recently refitted his twin screw to his 928. So he may be able to help you with some useful...
Forum: 928 Forum
07-02-2021, 04:47 PM
Replies: 53
Views: 5,341
Posted By John Speake

The red + terminal is a 5v feed from the EZK to...

The red + terminal is a 5v feed from the EZK to the Hall sensor. It needs 5v power, so that's something else for you to check.
Forum: 928 Forum
06-03-2021, 06:12 AM
Replies: 26
Views: 1,319
Posted By John Speake

Check there isn't a short on any of the injector...

Check there isn't a short on any of the injector plugs. If you disconnect one injector, then measure the resistance on the disconnected plug you should get 18/7 ohms about 2.5 ohms.
Not a short.
Forum: 928 Forum
05-25-2021, 08:09 AM
Replies: 36
Views: 2,033
Posted By John Speake

It's a late '86 S2... ...

It's a late '86 S2...
https://cimg7.ibsrv.net/gimg/rennlist.com-vbulletin/500x326/33x_prussianblue86_johnspeake_4021da6a67dac3cb10c1f08354c7df2c44fe07be.jpg
Forum: 928 Forum
05-25-2021, 07:44 AM
Replies: 36
Views: 2,033
Posted By John Speake

I spoke to Ashley Black (the owner) last week,...

I spoke to Ashley Black (the owner) last week, and he certainly knows 928s. But Oak tree are good :-)
Forum: 928 Forum
05-25-2021, 06:48 AM
Replies: 36
Views: 2,033
Posted By John Speake

Braunton Engineering

Braunton Engineering
Forum: 928 Forum
04-25-2021, 06:28 AM
Replies: 51
Views: 6,604
Posted By John Speake

If the washer is free to move around against the...

If the washer is free to move around against the block then yes it might cause noise which would confuse the diagnostic tester. The problem for the tester is that the knock signal are very low level...
Showing results 1 to 25 of 498
 
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