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1
Wedge List / TR8 suddenly won\'t start
« Last post by DAVID MASSEY on November 15, 2019, 07:49:04 AM »
I had one fail and the outer part started walking off the inner part.until it

rubbed on the frame.B  I never checked to see if it had rotated any.



Dave







-----Original Message-----

From: James Tencate <tencate@mac.com>

To: tr8 <tr8@mercury.lcs.mit.edu>

Cc: DAVID MASSEY <dave1massey@cs.com>

Sent: Thu, Nov 14, 2019 1:55 pm

Subject: Re:  TR8 suddenly won't start



unless the harmonic balancer has slid around and the timing marks are no

longer where they're supposed to be :-)



ask me how I know that!



But yes, start there and report back.



> On Nov 14, 2019, at 12:52 PM, DAVID MASSEY <dave1massey@cs.com> wrote:

>

> But the easiest way to check for spark is with a timing light which will

also let you know if it is properly timed.B  Two birds with one stone.

>

--

.

Archives provided courtesy  http://www.triumphwedgeowners.org

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2
Wedge List / TR8 suddenly won\'t start
« Last post by Wil&Carolyn on November 14, 2019, 03:02:40 PM »
I have missed a lot of this, but.....do you have an after market distributor and maybe the timing disk has slipped and timing is off?





> On November 14, 2019 at 11:54 AM James Tencate <tencate@mac.com> wrote:

>

>

> unless the harmonic balancer has slid around and the timing marks are no

> longer where they're supposed to be :-)

>

> ask me how I know that!

>

> But yes, start there and report back.

>

> > On Nov 14, 2019, at 12:52 PM, DAVID MASSEY <dave1massey@cs.com> wrote:

> >

> > But the easiest way to check for spark is with a timing light which will

> also let you know if it is properly timed.  Two birds with one stone.

> >

> --

> .

> Archives provided courtesy  http://www.triumphwedgeowners.org

--

.

Archives provided courtesy  http://www.triumphwedgeowners.org
3
Wedge List / TR8 suddenly won\'t start
« Last post by tencate on November 14, 2019, 02:55:50 PM »
unless the harmonic balancer has slid around and the timing marks are no

longer where they're supposed to be :-)



ask me how I know that!



But yes, start there and report back.



> On Nov 14, 2019, at 12:52 PM, DAVID MASSEY <dave1massey@cs.com> wrote:

>

> But the easiest way to check for spark is with a timing light which will

also let you know if it is properly timed.  Two birds with one stone.

>

--

.

Archives provided courtesy  http://www.triumphwedgeowners.org
4
Wedge List / TR8 suddenly won\'t start
« Last post by DAVID MASSEY on November 14, 2019, 02:52:58 PM »
Skipping one tooth will effect how it runs but they usually will run still.B

You will have to skip a number of teeth to make it not run anymore.

But the easiest way to check for spark is with a timing light which will also

let you know if it is properly timed.B  Two birds with one stone.



Dave







-----Original Message-----

From: James Tencate <tencate@mac.com>

To: charles frink <acltpvd@hotmail.com>

Cc: tr8 <tr8@mercury.lcs.mit.edu>

Sent: Thu, Nov 14, 2019 11:05 am

Subject: Re:  TR8 suddenly won't start



someone once told me that jumped timing chains were uncommon, not unheard of,

but reasonably rare...



BUT if the timing chain skipped a tooth, yes it's the sparks! they're not

happening at the right time :-)



Good point!



> On Nov 14, 2019, at 9:26 AM, charles frink <acltpvd@hotmail.com> wrote:

>

> Jim

>

> I wonder if the motor has a case of jumped timing chain ?B  The sudden

onset

of symptoms would indicate , at lease to me, that it is a timing issue .

??????????????

>

> Charles

> From: owner-tr8@mercury.lcs.mit.edu <mailto:owner-tr8@mercury.lcs.mit.edu>

<owner-tr8@mercury.lcs.mit.edu <mailto:owner-tr8@mercury.lcs.mit.edu>> on

behalf of James Tencate <tencate@mac.com <mailto:tencate@mac.com>>

> Sent: Thursday, November 14, 2019 7:51 AM

> To: tr8@mercury.lcs.mit.edu <mailto:tr8@mercury.lcs.mit.edu>

<tr8@mercury.lcs.mit.edu <mailto:tr8@mercury.lcs.mit.edu>>

> Subject: Re:  TR8 suddenly won't start

>

> Me? I'd start with ignition and make sure you have good spark at the right

> time. With carbs it's usually problems with spark OR fuel so just double

check

> the sparking can rule that whole side of the equation out right away (so

you

> can focus on fuel delivery). Which seems most likely to me at this point.

>

> [I should note that with FI, you always check spark AND/OR fuel (in that

> order). The fuel injection won't work if there's no spark, compounding your

> debugging so making sure you have sparks at the right time is FIRST

priority,

> then fuel pressure, then fuel injection.]

>

> But you're carb'd. As others suggest, check fuel pressure and keep us

posted.

> You'll discovered lots of us will have ideas and lots of them will probably

be

> proven NOT to be the case but we're happy to offer things to check!

> --

> .

> Archives provided courtesy  http://www.triumphwedgeowners.org

<mailto:http://www.triumphwedgeowners.org>

--

.

Archives provided courtesy  http://www.triumphwedgeowners.org

--

.

Archives provided courtesy  http://www.triumphwedgeowners.org
5
Wedge List / TR8 suddenly won\'t start
« Last post by tencate on November 14, 2019, 12:06:06 PM »
someone once told me that jumped timing chains were uncommon, not unheard of,

but reasonably rare...



BUT if the timing chain skipped a tooth, yes it's the sparks! they're not

happening at the right time :-)



Good point!



> On Nov 14, 2019, at 9:26 AM, charles frink <acltpvd@hotmail.com> wrote:

>

> Jim

>

> I wonder if the motor has a case of jumped timing chain ?  The sudden onset

of symptoms would indicate , at lease to me, that it is a timing issue .

??????????????

>

> Charles

> From: owner-tr8@mercury.lcs.mit.edu <mailto:owner-tr8@mercury.lcs.mit.edu>

<owner-tr8@mercury.lcs.mit.edu <mailto:owner-tr8@mercury.lcs.mit.edu>> on

behalf of James Tencate <tencate@mac.com <mailto:tencate@mac.com>>

> Sent: Thursday, November 14, 2019 7:51 AM

> To: tr8@mercury.lcs.mit.edu <mailto:tr8@mercury.lcs.mit.edu>

<tr8@mercury.lcs.mit.edu <mailto:tr8@mercury.lcs.mit.edu>>

> Subject: Re:  TR8 suddenly won't start

>

> Me? I'd start with ignition and make sure you have good spark at the right

> time. With carbs it's usually problems with spark OR fuel so just double

check

> the sparking can rule that whole side of the equation out right away (so

you

> can focus on fuel delivery). Which seems most likely to me at this point.

>

> [I should note that with FI, you always check spark AND/OR fuel (in that

> order). The fuel injection won't work if there's no spark, compounding your

> debugging so making sure you have sparks at the right time is FIRST

priority,

> then fuel pressure, then fuel injection.]

>

> But you're carb'd. As others suggest, check fuel pressure and keep us

posted.

> You'll discovered lots of us will have ideas and lots of them will probably

be

> proven NOT to be the case but we're happy to offer things to check!

> --

> .

> Archives provided courtesy  http://www.triumphwedgeowners.org

<mailto:http://www.triumphwedgeowners.org>

--

.

Archives provided courtesy  http://www.triumphwedgeowners.org
6
Wedge List / TR8 suddenly won\'t start
« Last post by tencate on November 14, 2019, 07:52:35 AM »
Me? I'd start with ignition and make sure you have good spark at the right

time. With carbs it's usually problems with spark OR fuel so just double check

the sparking can rule that whole side of the equation out right away (so you

can focus on fuel delivery). Which seems most likely to me at this point.



[I should note that with FI, you always check spark AND/OR fuel (in that

order). The fuel injection won't work if there's no spark, compounding your

debugging so making sure you have sparks at the right time is FIRST priority,

then fuel pressure, then fuel injection.]



But you're carb'd. As others suggest, check fuel pressure and keep us posted.

You'll discovered lots of us will have ideas and lots of them will probably be

proven NOT to be the case but we're happy to offer things to check!

--

.

Archives provided courtesy  http://www.triumphwedgeowners.org
7
Wedge List / Re: black wire near batt in tr7
« Last post by Bruce Clough on November 14, 2019, 05:13:47 AM »
Yeah, that was me - still looking for the function of the black with blue

trace wire.  Believe it was used during transport for something since I think

I researched this years ago, but lost my notes. Not on any wiring diagram I

know of, and probably on purpose...



Thx - Bruce
8
Wedge List / black wire near batt in tr7
« Last post by Robert Iwan on November 14, 2019, 02:26:26 AM »
i deleted whomever is was that was looking to find out about that wire, maybe the site below will help lead you to another page that helps, later, bob







https://www.google.com/search?rlz=1C1CHBD_enUS794US794&q=triumph+tr7+wiring+diagram&tbm=isch&source=univ&sa=X&ved=2ahUKEwjh9diXlOnlAhUoo1kKHbR8AbgQsAR6BAgGEAE&biw=1527&bih=780

--

.

Archives provided courtesy  http://www.triumphwedgeowners.org
9
Wedge List / TR8 suddenly won\'t start
« Last post by Robert Iwan on November 14, 2019, 01:43:33 AM »
was thinking of that myself, seem to remember range of 3-5 psi



> On November 13, 2019 at 2:56 PM Benjamin Zwissler <bjzwissler@gmail.com> wrote:

>

>

> The common thread between the old carbs and the new carb is its still

> running rich.  What are you using for a fuel pump?  Have you checked fuel

> pressure?

>

> Ben....

>

>

>

> Ben Zwissler

> bjzwissler@gmail.com

> 812-343-5533

> Columbus, IN

>

>

> On Wed, Nov 13, 2019 at 10:58 AM <buhays@mymts.net> wrote:

>

> > Hello Everyone

> >

> >

> >

> >

> > I am looking for ideas where to start finding the source of the issues of

> > my

> > non starting TR8. I apologize that this is so long.

> >

> >

> >

> >

> > I brought the car out of storage last June and drove it for about 50 miles

> > and

> > I noticed that the car was running rich. I tried to adjust the Strombergs

> > with

> > little luck. It just made things worse (went through a tank of fuel in 50

> > miles) so I decided that I would take the leap and do a four barrel

> > conversion, choosing a Quick Fuel 450 CFM carb.

> >

> >

> >

> >

> > After putting the carb on, it started right up and ran very well. Overall,

> > I

> > was very happy but I needed to stop it from running rich (black smoke out

> > the

> > tail pipes) and fouling the plugs. It turned a new set of plugs black in

> > five

> > miles.

> >

> >

> >

> >

> > I did the normal checks, compression was good (117-120) on a cold engine

> > and

> > was pulling 18 lbs of vacuum. Also looked for manifold leaks with a propane

> > torch and check the strength of the spark and everything seemed good. After

> > discussions with Holley (who now owns Quick Fuel) it was suggested that I

> > had

> > to re-jet my carb. Went down two sizes, it was better but still rich so

> > went

> > down another size and the car ran very poor like it was starving for fuel.

> > Parked it on the driveway and let it sit for an hour, came back later and

> > it

> > wouldnb t start.

> >

> >

> >

> >

> > I pushed it into the garage, check for fuel and spark and I had those. But

> > it

> > still wouldnb t start. Changed out the jets, no start. Even changed the

> > carb

> > to another 4 barrel from a friendb s TR8, it made no difference.

> >

> >

> >

> >

> > It was suggested to check the timing, what I noticed if I took distributor

> > cap

> > off and turned the engine by hand, the alternator / water pump belt would

> > move

> > about a second or two before the rotor would move, is this a timing chain

> > issue?

> >

> >

> >

> >

> > I was thinking in the spring to replace the timing chain and cam (after 27

> > years of ownership it may be time to change both). Does anyone out there in

> > wedge land have any ideas where else I should be looking for a solution.

> >

> >

> >

> >

> > Again I apologize for the long email.

> >

> > Terry

> > --

> > .

> > Archives provided courtesy  http://www.triumphwedgeowners.org

> >

> --

> .

> Archives provided courtesy  http://www.triumphwedgeowners.org

--

.

Archives provided courtesy  http://www.triumphwedgeowners.org
10
Wedge List / TR8 suddenly won\'t start
« Last post by Benjamin Zwissler on November 13, 2019, 02:57:26 PM »
The common thread between the old carbs and the new carb is its still

running rich.  What are you using for a fuel pump?  Have you checked fuel

pressure?



Ben....







Ben Zwissler

bjzwissler@gmail.com

812-343-5533

Columbus, IN





On Wed, Nov 13, 2019 at 10:58 AM <buhays@mymts.net> wrote:



> Hello Everyone

>

>

>

>

> I am looking for ideas where to start finding the source of the issues of

> my

> non starting TR8. I apologize that this is so long.

>

>

>

>

> I brought the car out of storage last June and drove it for about 50 miles

> and

> I noticed that the car was running rich. I tried to adjust the Strombergs

> with

> little luck. It just made things worse (went through a tank of fuel in 50

> miles) so I decided that I would take the leap and do a four barrel

> conversion, choosing a Quick Fuel 450 CFM carb.

>

>

>

>

> After putting the carb on, it started right up and ran very well. Overall,

> I

> was very happy but I needed to stop it from running rich (black smoke out

> the

> tail pipes) and fouling the plugs. It turned a new set of plugs black in

> five

> miles.

>

>

>

>

> I did the normal checks, compression was good (117-120) on a cold engine

> and

> was pulling 18 lbs of vacuum. Also looked for manifold leaks with a propane

> torch and check the strength of the spark and everything seemed good. After

> discussions with Holley (who now owns Quick Fuel) it was suggested that I

> had

> to re-jet my carb. Went down two sizes, it was better but still rich so

> went

> down another size and the car ran very poor like it was starving for fuel.

> Parked it on the driveway and let it sit for an hour, came back later and

> it

> wouldnb t start.

>

>

>

>

> I pushed it into the garage, check for fuel and spark and I had those. But

> it

> still wouldnb t start. Changed out the jets, no start. Even changed the

> carb

> to another 4 barrel from a friendb s TR8, it made no difference.

>

>

>

>

> It was suggested to check the timing, what I noticed if I took distributor

> cap

> off and turned the engine by hand, the alternator / water pump belt would

> move

> about a second or two before the rotor would move, is this a timing chain

> issue?

>

>

>

>

> I was thinking in the spring to replace the timing chain and cam (after 27

> years of ownership it may be time to change both). Does anyone out there in

> wedge land have any ideas where else I should be looking for a solution.

>

>

>

>

> Again I apologize for the long email.

>

> Terry

> --

> .

> Archives provided courtesy  http://www.triumphwedgeowners.org

>

--

.

Archives provided courtesy  http://www.triumphwedgeowners.org
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