Museum Se5a - Revival!

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Re: Museum Se5a - Revival!

Post by reliant1 » Sat Jan 19, 2013 11:01 pm

Checking for a spark on each cylinder seems a good idea. Each individual plug can be earthed by holding against the engine to see if they spark or there are various inline testers such as these

http://www.ebay.co.uk/itm/1-X-GENUINE-L ... 2ec1936b3b.

The compression test I did on my SS1 showed up a head gasket failure as the readings between two cylinders were much lower than the others. I used this one


http://www.ebay.co.uk/itm/DRAPER-37442- ... 1154196?pt


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Re: Museum Se5a - Revival!

Post by jwdg298 » Mon Jan 21, 2013 8:09 pm

Hi all,

Well, I took the vacuum hose off the inlet manifold and sealed the hole, it still ran like a bag of nails.. :cry:
Comp. tester arrived today and so I merrily set about testing. I got the engine running but she wouldn't stay running for long so decided to do it with a cold engine and just look for a difference. I hope this is ok.

I only managed to do four cylinders but the approximate readings are as follows :cry:

cyl 2 = 60psi
cyl 4 = 35psi
cyl 6 = 60psi

cyl 1 = Not done yet
cyl 3 = 60psi
cyl 5 = Not done yet


I don't think the compression tester I bought is the best and I was doing the test on my own but I dont think it looks promising. Based on this I reckon I will be getting acquainted with the manual........... I will try to do the other two tomorrow as I ran out of daylight today.

Next question: If I do attempt the head gasket change, (assuming the heads are ok) I guess I need to do both sides so next is the shopping list.

2 x Head gaskets
Inlet manifold gasket
New Head bolts for both sides (I'm just assuming I need new ones??)
Oil + Coolant
:?: :?: :?:

That's all I can think of but having never done it before I would welcome suggestions as to what else is worth doing and what else I will need.

Thanks and sorry it's another long one.
Gerry
Last edited by jwdg298 on Mon Jan 21, 2013 8:11 pm, edited 1 time in total.



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Re: Museum Se5a - Revival!

Post by philhoward » Mon Jan 21, 2013 8:11 pm

Did you do it with the throttle wide open ( and the coil disconnected)?


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Re: Museum Se5a - Revival!

Post by Oaksey » Mon Jan 21, 2013 8:14 pm

The results aren't REALLY terrible, so its hopefully not something too bad. Try the headgasket first and see what it does. The heads are easy to get off on an Essex, not like these Japanese things :roll: :wink:


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Re: Museum Se5a - Revival!

Post by scimjim » Mon Jan 21, 2013 8:16 pm

Gerry, do you have a manual? Just checking your cylinder numbering as I'm surprised you've done 3 & 6 (at the rear) but not 1 & 5?

If needed: Essex head bolts aren't stretch - just clean threads and bores. I only use Reinz head gaskets and good inlet gaskets. Do exhaust gaskets if the heads are off and bank on replacing the studs.


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Re: Museum Se5a - Revival!

Post by MikeyBikey » Mon Jan 21, 2013 8:23 pm

Gerry, as mentioned by previous colleagues the heads really are straightforward on these. Being ohv there are no chains etc. However do make sure you use a decent inlet manifold gasket. The inlet manifold needs to sit true to prevent air and water seeping in causing misfires.

And on another point do you know if you've got steel timing gear ?

oops just read this and it sounds a bit condasending. Didn't mean to. I've learnt through experience and just trying to allay any fears / concerns.
Last edited by MikeyBikey on Mon Jan 21, 2013 8:34 pm, edited 1 time in total.


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Re: Museum Se5a - Revival!

Post by jwdg298 » Mon Jan 21, 2013 8:32 pm

:oops: I got it wrong, I thought I had it right in my head but clearly not. Sorry all. 4,5,6 (left bank?) and 2 (centre of right bank) are the ones I did do. I struggled to get the tester into the back right and the one under the alternator, just lack of daylight and ability really.

Mikeybikey, dont know about the timing gear but will endeavour to find out, I can look through the fuel pump housing right?



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Re: Museum Se5a - Revival!

Post by MikeyBikey » Mon Jan 21, 2013 8:35 pm

jwdg298 wrote::oops: I got it wrong, I thought I had it right in my head but clearly not. Sorry all. 4,5,6 (left bank?) and 2 (centre of right bank) are the ones I did do. I struggled to get the tester into the back right and the one under the alternator, just lack of daylight and ability really.

Mikeybikey, dont know about the timing gear but will endeavour to find out, I can look through the fuel pump housing right?
If you look at the engine from the front of the car 123 are on the left (drivers side with 1 being at the front, 3 hearest the bulkhead


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Re: Museum Se5a - Revival!

Post by jwdg298 » Mon Jan 21, 2013 8:38 pm

Thanks again, I checked the manual and I deffo got it wrong originally so I actually did 2,4,5, and 6 with 5 being my problem child so far.



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Re: Museum Se5a - Revival!

Post by scimjim » Mon Jan 21, 2013 8:39 pm

60 psi is way too low. Was the throttle wide open? Which cylinder is at 35?


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Re: Museum Se5a - Revival!

Post by scimjim » Mon Jan 21, 2013 8:40 pm

jwdg298 wrote:Thanks again, I checked the manual and I deffo got it wrong originally so I actually did 2,4,5, and 6 with 5 being my problem child so far.
Okay - that aligns with smoke from the NS exhaust.


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Re: Museum Se5a - Revival!

Post by jwdg298 » Mon Jan 21, 2013 8:42 pm

Phil mentioned the throttle, it wasn't open, I assume I can press the pedal while I turn the key as I was on my own?



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Re: Museum Se5a - Revival!

Post by scimjim » Mon Jan 21, 2013 8:46 pm

As long as you have a screw in compression tester yes :-)


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SECURE DRY STORAGE FOR YOUR SCIMITAR

Current: SE5 (8Ball), TI SS1 (snotty), 1600 SS1 (G97), 1600 SS1 (C686CCR), 2.5TD SE5a (diesel 5a), 6 x random other SS1s.
Previous: SE5, 3 x SE5a, 2 x SE6a, 3 x SE6b, GTC, 2.9i GTC, 3 x 1600 SS1, 1300 SS1, Mk1 Ti Sabre, Mk1.5 CVH Sabre
Chief mechanic for: 1400 K series SS1 (Megan3), 1400 CVH EFi SS1 (Grawpy), 1300 SS1 (Number One) & Sarah's coupe.
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Re: Museum Se5a - Revival!

Post by Corky » Mon Jan 21, 2013 8:47 pm

jwdg298 wrote:Hi all,

Well, I took the vacuum hose off the inlet manifold and sealed the hole, it still ran like a bag of nails.. :cry:
Comp. tester arrived today and so I merrily set about testing. I got the engine running but she wouldn't stay running for long so decided to do it with a cold engine and just look for a difference. I hope this is ok.

I only managed to do four cylinders but the approximate readings are as follows :cry:

cyl 2 = 60psi
cyl 4 = 35psi
cyl 6 = 60psi

cyl 1 = Not done yet
cyl 3 = 60psi
cyl 5 = Not done yet


I don't think the compression tester I bought is the best and I was doing the test on my own but I dont think it looks promising. Based on this I reckon I will be getting acquainted with the manual........... I will try to do the other two tomorrow as I ran out of daylight today.

Next question: If I do attempt the head gasket change, (assuming the heads are ok) I guess I need to do both sides so next is the shopping list.

2 x Head gaskets
Inlet manifold gasket
New Head bolts for both sides (I'm just assuming I need new ones??)
Oil + Coolant
:?: :?: :?:

That's all I can think of but having never done it before I would welcome suggestions as to what else is worth doing and what else I will need.

Thanks and sorry it's another long one.
Gerry
With those results I wouldn't be rushing to take the heads off yet. If I were you, I'd take my time and do the test again. All six plugs out, fully charged battery, do the test twice in rotation. Warm the engine if possible.

I hate to say it, but the tester you have linked is the same as one I binned. It may be worth asking your local motor factors if they'll hire you a professional one or maybe your local garage will?

Good luck with it, and I hope the problem is a simple fix.


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Re: Museum Se5a - Revival!

Post by jwdg298 » Mon Jan 21, 2013 8:51 pm

I hate to say it, but the tester you have linked is the same as one I binned
Despite my lack of experience I didn't get a very good feeling from it so I reckon I will try and acquire another one from somewhere. :evil:



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