Rear Spark Plugs 912
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Rear Spark Plugs 912
Anyone got any tips/tools for replacing the spark plugs,
particularly the 2 rear ones. Can’t do better than 90mins for the left rear one!!
Did Porsche want nobody to do this themselves?
Thanks.
particularly the 2 rear ones. Can’t do better than 90mins for the left rear one!!
Did Porsche want nobody to do this themselves?
Thanks.
- AndrewSlater
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Re: Rear Spark Plugs 912
When I first started changing spark plugs on my 912 I had the same problem.
The first thing is to preferably have the correct tool. It is essential that the spark plug tool has an effective rubber insert to tightly grip the plug correctly.
If not you can waste hours trying to fish plugs out of the tinware.
It is also worth having a mental note of the orientation of the spark plug tool when you take the plugs out, as it will help relocate the blind holes.
With the original tool, insert t bar, slacken plug ( rear left has at least 1mm off spare room so keep your swear box handy ), remove t-bar and hand wind the plug out.
Again ensure the new plug is gripped securely in the tool, remember the correct orientation and hand tighten in ( without the t-bar ). Once you have the plug hand tight fit the t-bar to the tool and torque up.
Once you have a technique they are pretty quick.
Hope that helps.
Andrew
The first thing is to preferably have the correct tool. It is essential that the spark plug tool has an effective rubber insert to tightly grip the plug correctly.
If not you can waste hours trying to fish plugs out of the tinware.
It is also worth having a mental note of the orientation of the spark plug tool when you take the plugs out, as it will help relocate the blind holes.
With the original tool, insert t bar, slacken plug ( rear left has at least 1mm off spare room so keep your swear box handy ), remove t-bar and hand wind the plug out.
Again ensure the new plug is gripped securely in the tool, remember the correct orientation and hand tighten in ( without the t-bar ). Once you have the plug hand tight fit the t-bar to the tool and torque up.
Once you have a technique they are pretty quick.
Hope that helps.
Andrew
1966 Porsche 912 Slate Grey, red interior - first owner owned for 41 years
1974 Porsche 911 2.7 (The Manhattan project) viewtopic.php?f=28&t=51455
1973 VW 914 1.7 Olympic Blue - ( gone to a good home )
1974 Porsche 911 2.7 (The Manhattan project) viewtopic.php?f=28&t=51455
1973 VW 914 1.7 Olympic Blue - ( gone to a good home )
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Re: Rear Spark Plugs 912
Andrew`s advice is very good but you might also want to buy a Telescopic Socket Wrench from PRS
www.prs356.com - you will find it under Parts and then Tools
You will still need a 3/8" Drive Ratchet Wrench to be able to use it
www.prs356.com - you will find it under Parts and then Tools
You will still need a 3/8" Drive Ratchet Wrench to be able to use it
Mike at P.R.S.
www.prs356.com
www.prs356.com
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Re: Rear Spark Plugs 912
Brilliant. Thank you both.
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Re: Rear Spark Plugs 912
I use the PRS tool and its great. I can get a plug in/out in under a min. However, it took 10 mins to get the lead on plug 4!!!
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“A REMINDER. I would be grateful if those members who have borrowed bits from me in emergencies (e.g starter motor, oil cooler, etc) would return them and/or contact me”. – Chris Turner RIP
Re: Rear Spark Plugs 912
The spark plug leads with the short connectors are a real pain on no. 4, hence why I use the long type. Got them from rpl.
Re: Rear Spark Plugs 912
Agree the PRS tool is great but getting the plug lead on the rear takes the time
1966 912 Slate Grey sunroof
1975 911 Blue Targa
2001 996 Blue Convertible
1981 Ferrari 308 GTB
1960 Mercedes 190SL
1983 Mercedes 500SL
1975 911 Blue Targa
2001 996 Blue Convertible
1981 Ferrari 308 GTB
1960 Mercedes 190SL
1983 Mercedes 500SL
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Re: Rear Spark Plugs 912
It wasn't the length of the connector. It was more the cap type on the connector. One connector expects you have removed the terminals from the plugs. While the ones I have now, and are a pain, expect terminals to be on so there is less error room when getting the cap to fit.wildtexas wrote:The spark plug leads with the short connectors are a real pain on no. 4, hence why I use the long type. Got them from rpl.
“A REMINDER. I would be grateful if those members who have borrowed bits from me in emergencies (e.g starter motor, oil cooler, etc) would return them and/or contact me”. – Chris Turner RIP
Re: Rear Spark Plugs 912
Neil, I assume you have the Beru leads with the shorter black connector cap? They require the little caps to be threaded onto the spark plugs? A real pita to get it onto number 3?
That's why I went with the longer brown cap version from rpl, I think they come from Stoddards in the USA.
No adaptor required, just the thread and really easy to get a grip and push the leads on.
Matt
That's why I went with the longer brown cap version from rpl, I think they come from Stoddards in the USA.
No adaptor required, just the thread and really easy to get a grip and push the leads on.
Matt
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Re: Rear Spark Plugs 912
912s, Pah! You want to try changing the plugs on a VW engine fitted with 48IDA Webers. Now that's fun...
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Re: Rear Spark Plugs 912
I had those on it but some of the leads/caps were getting old so I replaced with a set bought from someone on here.wildtexas wrote:Neil, I assume you have the Beru leads with the shorter black connector cap? They require the little caps to be threaded onto the spark plugs? A real pita to get it onto number 3?
That's why I went with the longer brown cap version from rpl, I think they come from Stoddards in the USA.
No adaptor required, just the thread and really easy to get a grip and push the leads on.
Matt
“A REMINDER. I would be grateful if those members who have borrowed bits from me in emergencies (e.g starter motor, oil cooler, etc) would return them and/or contact me”. – Chris Turner RIP
Re: Rear Spark Plugs 912
Hi , first off its the front spark plugs and I used to deal with them by putting the car up on stands, which it would be for servicing anyway , removing the rear wheels and then with the motor supported on a trolley jack I would undo the rear motor mounts and lower the motor until I could see the plugs from inside the rear inner wing, you can tilt the engine and gearbox quite a reasonable amount without doing any harm although you might want to disconnect the wiring to stop it being pulled , this may sound like a palaver but it's a lot less hassle than sorting a crossed or stripped pug.
Re: Rear Spark Plugs 912
Wow! That sounds like a lot of work.
I’ve always just done it by putting the plug into a proper plug socket (usually with a rubber insert which stops the plug falling out when inverted) then holding the socket c/w plug in your hand reach round the carb and screw it in by hand until it goes tight, then nip each one up using the correct bar and extension, sometimes the u/j fitting is needed also. Usually takes a few minutes for each plug.
I’ve always just done it by putting the plug into a proper plug socket (usually with a rubber insert which stops the plug falling out when inverted) then holding the socket c/w plug in your hand reach round the carb and screw it in by hand until it goes tight, then nip each one up using the correct bar and extension, sometimes the u/j fitting is needed also. Usually takes a few minutes for each plug.
Burgundy 69 912
Audi A4 1.8T sport avant
VW T25 magnum multivan
Audi A4 1.8T sport avant
VW T25 magnum multivan
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Re: Rear Spark Plugs 912
Just as an aside to the above
If the plugs are tight to remove - it is a fair bet that the Heads are cracked
Usually between the Inlet Valve Seat and the Spark plug Hole and usually the 30 degree Late Heads
It is carbon in this crack that is making the Plug difficult to remove
If the plugs are tight to remove - it is a fair bet that the Heads are cracked
Usually between the Inlet Valve Seat and the Spark plug Hole and usually the 30 degree Late Heads
It is carbon in this crack that is making the Plug difficult to remove
Mike at P.R.S.
www.prs356.com
www.prs356.com
Re: Rear Spark Plugs 912
Great bit of info Mike
Burgundy 69 912
Audi A4 1.8T sport avant
VW T25 magnum multivan
Audi A4 1.8T sport avant
VW T25 magnum multivan