Ti timing issue

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PeteMac
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Ti timing issue

Post by PeteMac » Thu Jun 28, 2018 9:48 pm

Attempted to set timing tonight with strobe gun, but with unexpected result. Spot of white paint on wheel at 15 BTDC, and spot on pointer. Attached gun cable on 1st plug, connected to battery, started car.

Pointed gun, no sign of white mark on wheel. On closer inspection, I can see it about a third of the way round the wheel, no where near the pointer. but car sounds to be running fine. Just had to resort to guesswork for the time being.

I know the PO had fitted a new timing belt (not exactly sure when). Has something been done wrong? Or is it just me not doing it right?


1987 1800Ti
(previous 1975 SE5a, 1968 GT)

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Ti timing issue

Post by scimjim » Thu Jun 28, 2018 9:59 pm

There’s a recent thread about this isn’t there - crank wheel being put on wrong?


Jim King

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), Sabre/MX5 auto (The Flying Broomstick),
1300 SS1 (Number One) & Sarah's coupe.
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Ti timing issue

Post by scimjim » Thu Jun 28, 2018 10:20 pm

frase29 wrote:
Mon Apr 02, 2018 8:40 pm
Small update this time - very unlike me, i know! Have done the cambelt change now, and found the timing issue.

Mr Hughes was spot on - whilst the harmonic dampener locates on the key on the crank, the belt pulley can be bolted on any which way you like! Think I've put mine on right this time :lol: have yet to check, but this will definitely be the cause of the timing issues...

Worth checking yours Corky, sounds like it could be shifted round by one if it still ran!


Jim King

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), Sabre/MX5 auto (The Flying Broomstick),
1300 SS1 (Number One) & Sarah's coupe.
CURE THE FAULT - NOT THE SYMPTOMS

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Ti timing issue

Post by Corky » Thu Jun 28, 2018 11:01 pm

Sounds like the pulley wheel is one bolt out on the base.

If the dizzy has been inserted correctly, you should find that 14’ btdc occurs with the dizzy retaining bolt perfectly central to the slot.


Steve
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Ti timing issue

Post by PeteMac » Sat Jun 30, 2018 7:29 pm

One step forwards, two steps back. After checking the timing on Thursday (and setting it as best I could - it sounded good) I did an oil change. Oil filter change was a pig of a job, but managed eventually.

Started car today, but is running badly. Attempted to adjust timing but didn't improve things. Idling very low (below 1000rpm) and just sounds like it's missing a beat on throttle revs. (Sounds like a VW Beetle.) Strong smell of petrol at exhaust.

I'm wondering if I've dislodged something when fighting with the oil filter on Thursday. Any thoughts?


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Ti timing issue

Post by Corky » Sat Jun 30, 2018 7:54 pm

Oil breather or vac hose knocked loose?


Steve
Current:- SS1 Ti RG sprint car. VW Touareg 3.0 V6
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Ti timing issue

Post by geoff corderoy » Sun Jul 01, 2018 11:20 am

something simple is my guess, probably dislodged a plug lead when adjusting timing or a plug is sooted up, easy to check first. Manual suggests Idle speed should be 900 so not low at 1000. if you go above 900 has the throttle position sensor been adjustmed to suit. good luck!



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Ti timing issue

Post by PeteMac » Sun Jul 01, 2018 12:15 pm

Checked plugs and leads. Plugs were a bit sooty, but likely to be after the rich, lumpy running yesterday.

No sign of any other loose connections. Still barely wanting to run. The odd backfire, loud pop under bonnet. Operating the throttle has little effect. Just isn’t happy. Infuriating, as it was running fine on Thursday.


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Ti timing issue

Post by PeteMac » Sun Jul 01, 2018 1:09 pm

Mmm, disconnected the vacuum pipe from the top of the fuel pressure regulator and the engine is far more happy to run. And when re-attached, it immediately stalls. Now, if I only knew what that is telling me!


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Ti timing issue

Post by PeteMac » Mon Jul 02, 2018 3:25 pm

Thanks to this guy on youtube I've a better understanding of how the regulator works. (Probably like teaching many of you how to suck eggs, but hopefully be of use to someone.)

So, in my case the engine is idling nicely with the vacuum hose disconnected (i.e. no vacuum, so regulator is increasing the fuel pressure.) Re-connecting the hose (and hence the vacuum) tells regulator we're idling, and fuel pressure is decreased accordingly. At this point, my engine runs like a dog and is very likely to stall. (Placing finger over disconnected vacuum hose kills engine - is that expected?)

So my understanding has improved a little, but still struggling to diagnose. Any ideas?


1987 1800Ti
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Ti timing issue

Post by scimjim » Mon Jul 02, 2018 3:57 pm

Are you blanking the hose when you remove it? If not, it’s probably more to do with the extra air you’re getting post AFM?


Jim King

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), Sabre/MX5 auto (The Flying Broomstick),
1300 SS1 (Number One) & Sarah's coupe.
CURE THE FAULT - NOT THE SYMPTOMS

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Ti timing issue

Post by PeteMac » Mon Jul 02, 2018 4:38 pm

When Unblanked - runs OK - so likely to be the extra air, as you said.

When Blanked - Quickly deteriorates/stalls.


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Ti timing issue

Post by scimjim » Mon Jul 02, 2018 6:01 pm

PeteMac wrote:
Sat Jun 30, 2018 7:29 pm
One step forwards, two steps back. After checking the timing on Thursday (and setting it as best I could - it sounded good) I did an oil change. Oil filter change was a pig of a job, but managed eventually.

Started car today, but is running badly. Attempted to adjust timing but didn't improve things. Idling very low (below 1000rpm) and just sounds like it's missing a beat on throttle revs. (Sounds like a VW Beetle.) Strong smell of petrol at exhaust.

I'm wondering if I've dislodged something when fighting with the oil filter on Thursday. Any thoughts?
You didn’t wash it too did you? Might seem like a daft question but the air filter housing lets water in, which sits in the AFM.


Jim King

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), Sabre/MX5 auto (The Flying Broomstick),
1300 SS1 (Number One) & Sarah's coupe.
CURE THE FAULT - NOT THE SYMPTOMS

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PeteMac
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Ti timing issue

Post by PeteMac » Mon Jul 02, 2018 6:34 pm

About the only thing I’ve not done with it! :D


1987 1800Ti
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Ti timing issue

Post by PeteMac » Thu Jul 05, 2018 11:39 pm

Had about enough. Thought the issue could be a stuck air regulator. It’d give the same symptoms on cold start. Checked tonight. Looks like the top hose has been blanked. So that might not help matters, but I don’t think it’s my problem. Car still running rough. Thought I’d take it for a spin round the block - see if it improved on driving. Nope, still dog rough - backfiring like mad on acceleration. Think I’ll need to resort to a local garage.

One positive though - the lights go up and down a treat!



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