I need to remove and re-install my spark plugs. I don't have a torque wrench. Can I put them back in ok without using a torque wrench? How tight do they need to be screwed in?
"Adrian" <Ade> wrote in message news:t0i76156q8i03aehoeiiogkh33ml2q7ijg@4ax.com...>I need to remove and re-install my spark plugs. I don't have a torque> wrench. Can I put them back in ok without using a torque wrench? How> tight do they need to be screwed in?
I've never used a torque wrench for this. I would screw them in until they are hand tight and then another quarter turn with a spanner. It makes a bit of difference whether you are using a new copper washer or not. If the washer is not new, it won't be so ready to be squeezed so will make do with less than if it's a new one.
I need to remove and re-install my spark plugs. I don't have a torque> wrench. Can I put them back in ok without using a torque wrench? How> tight do they need to be screwed in?
Finger tight, then just enough to crush the washer. (If they have a washer) It's all done by feel. Too loose at first is far more preferable to too tight and stripped threads.
Adrian wrote:> I need to remove and re-install my spark plugs. I don't have a torque> wrench. Can I put them back in ok without using a torque wrench? How> tight do they need to be screwed in?
I've been playing around with the internal combustion engine for 45 years and have never used a torque wrench on a spark plug. (I have used one on more critical applications).
Before advice can be given you need to tell us the vehicle and/or type of plug. Some plugs screw down on to a compressible washer to form a seal, whilst others have a tapered seat.
Generally speaking the type with a tapered seat only need to be nipped up. The type with a compressible washer need to be finger tight, then perhaps an additional quarter turn for a first installation. If this type of plug is to be re-fitted it will not need to be tightened so much subsequently as the washer will already have deformed.
Always use a proper socket designed for the plug, and make certain that the socket is kept straight to avoid breaking the plug.
I need to remove and re-install my spark plugs. I don't have a torque>> wrench. Can I put them back in ok without using a torque wrench? How>> tight do they need to be screwed in?>
I've been playing around with the internal combustion engine for 45 > years and have never used a torque wrench on a spark plug. (I have used > one on more critical applications).>
Before advice can be given you need to tell us the vehicle and/or type > of plug. Some plugs screw down on to a compressible washer to form a > seal, whilst others have a tapered seat.>
Generally speaking the type with a tapered seat only need to be nipped > up. The type with a compressible washer need to be finger tight, then > perhaps an additional quarter turn for a first installation. If this > type of plug is to be re-fitted it will not need to be tightened so much > subsequently as the washer will already have deformed.>
Always use a proper socket designed for the plug, and make certain that > the socket is kept straight to avoid breaking the plug.>
Chris
Wow! 3 virtually identical replies within 11 minutes! This must be a first for u.r.c.m.
The message <pan.2005.04.18.15.06.54.402650@nospam.thank.you> from gazzafield <nospam@nospam.thank.you> contains these words:
It's all done by feel.
The trouble is - this "mechanic's touch" which many of us have has been accquired over years of buggernig things up - and the poor bloke may not wish to do that.
"Adrian" <Ade> wrote in message >news:t0i76156q8i03aehoeiiogkh33ml2q7ijg@4ax.com...>>I need to remove and re-install my spark plugs. I don't have a torque>> wrench. Can I put them back in ok without using a torque wrench? How>> tight do they need to be screwed in?>
I've never used a torque wrench for this. I would screw them in until they >are hand tight and then another quarter turn with a spanner.
ISTR taper seat plugs should only be another 1/16th turn? Not that I can recall using a taper seat plug on anything...
-- Regards, Chris (Please take out my car to reply by email) ----1961 Austin A40 Farina----1966 Triumph Herald Estate--- ---1967 Riley Elf---1965 Hillman Minx---1969 Morris Minor-- -1972 Mini Clubman estate--1957 Standard 8--1979 Ford Capri ********** Please don't email in HTML! **********
"Chris Bolus" <chris@FARINAb0lus.com> wrote in message news:lt486154d7hfh7jji7p86c2u4fa2sn4o3g@4ax.com...> On Mon, 18 Apr 2005 15:02:55 +0000 (UTC), "Rob graham"> <rttgraham@btinternet.com> wrote:> SNIP Not that I can> recall using a taper seat plug on anything...>
--> Regards, Chris (Please take out my car to reply by email)> ----1961 Austin A40 Farina----1966 Triumph Herald Estate---> ---1967 Riley Elf---1965 Hillman Minx---1969 Morris Minor--> -1972 Mini Clubman estate--1957 Standard 8--1979 Ford Capri
Well, not on any of those you wouldn't Can you take your plugs apart to clean them?
Angus McCoatup 19 April 2005 01:01:02 [ permanent link ]
"shazzbat" <shazzbat@spamlessness.co.uk> wrote in message news:d414m7$hss$1@news6.svr.pol.co.uk...>
"Chris Bolus" <chris@FARINAb0lus.com> wrote in message> news:lt486154d7hfh7jji7p86c2u4fa2sn4o3g@4ax.com...> > On Mon, 18 Apr 2005 15:02:55 +0000 (UTC), "Rob graham"> > <rttgraham@btinternet.com> wrote:> >
SNIP> Not that I can> > recall using a taper seat plug on anything...> >
--> > Regards, Chris (Please take out my car to reply by email)> > ----1961 Austin A40 Farina----1966 Triumph Herald Estate---> > ---1967 Riley Elf---1965 Hillman Minx---1969 Morris Minor--> > -1972 Mini Clubman estate--1957 Standard 8--1979 Ford Capri>
Well, not on any of those you wouldn't> Can you take your plugs apart to clean them?
NO NO NO - unless you know what plugs they are and what engine it is....
for tapered plugs in an alu head this technique could be disastrous
"Rob graham" <rttgraham@btinternet.com> wrote in message news:d40i6u$did$1@hercules.btinternet.com...>
"Adrian" <Ade> wrote in message > news:t0i76156q8i03aehoeiiogkh33ml2q7ijg@4ax.com...>>I need to remove and re-install my spark plugs. I don't have a torque>> wrench. Can I put them back in ok without using a torque wrench? How>> tight do they need to be screwed in?>
I've never used a torque wrench for this. I would screw them in until they > are hand tight and then another quarter turn with a spanner. It makes a > bit of difference whether you are using a new copper washer or not. If the > washer is not new, it won't be so ready to be squeezed so will make do > with less than if it's a new one.>
On Mon, 18 Apr 2005 15:02:55 +0000 (UTC), Rob graham wrote:
"Adrian" <Ade> wrote in message > news:t0i76156q8i03aehoeiiogkh33ml2q7ijg@4ax.com...>>I need to remove and re-install my spark plugs. I don't have a torque>> wrench. Can I put them back in ok without using a torque wrench? How>> tight do they need to be screwed in?>
I've never used a torque wrench for this. I would screw them in until they > are hand tight and then another quarter turn with a spanner.
And if they are taper plugs in an alloy head you will then want a Helicoil! 1/16th of a turn for tapers at the very very most.
I've never used a torque wrench for this. I would screw them in
until they> > are hand tight and then another quarter turn with a spanner.>
And if they are taper plugs in an alloy head you will then want a
Helicoil!> 1/16th of a turn for tapers at the very very most.
You know those "silly" spark plug wrenches with only about a 4 inch handle on top? Well use one of those or similar hand tight. If it's a cast iron head then it's not so critical.
"Chris Bolus" <chris@FARINAb0lus.com> wrote in message news:lt486154d7hfh7jji7p86c2u4fa2sn4o3g@4ax.com...> On Mon, 18 Apr 2005 15:02:55 +0000 (UTC), "Rob graham"> <rttgraham@btinternet.com> wrote:>
"Adrian" <Ade> wrote in message>>news:t0i76156q8i03aehoeiiogkh33ml2q7ijg@4ax.com...>>>I need to remove and re-install my spark plugs. I don't have a torque>>> wrench. Can I put them back in ok without using a torque wrench? How>>> tight do they need to be screwed in?>>
I've never used a torque wrench for this. I would screw them in until they>>are hand tight and then another quarter turn with a spanner.>
ISTR taper seat plugs should only be another 1/16th turn? Not that I can> recall using a taper seat plug on anything...>
True. I was talking about ones with washers but shouldn't have omitted the taper ones.
On Mon, 18 Apr 2005 21:17:32 +0100, "shazzbat" <shazzbat@spamlessness.co.uk> wrote:
"Chris Bolus" <chris@FARINAb0lus.com> wrote in message>news:lt486154d7hfh7jji7p86c2u4fa2sn4o3g@4ax.com...>> On Mon, 18 Apr 2005 15:02:55 +0000 (UTC), "Rob graham">> <rttgraham@btinternet.com> wrote:>>
SNIP> Not that I can>> recall using a taper seat plug on anything...>>
-->> Regards, Chris (Please take out my car to reply by email)>> ----1961 Austin A40 Farina----1966 Triumph Herald Estate--->> ---1967 Riley Elf---1965 Hillman Minx---1969 Morris Minor-->> -1972 Mini Clubman estate--1957 Standard 8--1979 Ford Capri>
Well, not on any of those you wouldn't>Can you take your plugs apart to clean them? >
They're not my only cars you know! Just the classic fleet. I also run a Rover 218 (diesel, no plugs), a Toyota Previa, and I'm about to finish an Omega. Anything else I've ever owned is on my website. -- Regards, Chris (Please take out my car to reply by email) ----1961 Austin A40 Farina----1966 Triumph Herald Estate--- ---1967 Riley Elf---1965 Hillman Minx---1969 Morris Minor-- -1972 Mini Clubman estate--1957 Standard 8--1979 Ford Capri ********** Please don't email in HTML! **********
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