[TR] stumped!

[Tony Drews]

A couple of quick ideas:

Check that the intake manifold is on all the way.  It will commonly 
get held up on the locating pin on the lower side of the manifold and 
that's hard to see from above.

Pull the valve cover and verify that valves are opening and closing 
correctly and there's some valve gap.

Tony Drews

At 05:37 PM 2/5/2014, Andrew Uprichard wrote:
>So now I am getting frustrated, which is never a good thing.
>
>Just finishing a frame-off restoration with a rebuilt engine on a 59 TR3A
>and everything had gone way too smoothly:  no electrical glitches, no paint
>scuffs.  Then I went to start her.  Managed to get her going, but only on 2
>cylinders.  Pulled the plugs leads for #1 and #2 and it made no difference
>(other than shocking me!), so the car had spark on all 4 cylinders but was
>only running on 3 and 4.  Pulled the plugs and 1 and 2 looked remarkably dry
>- 3 and 4 looked pretty normal.
>
>De-coupled the carbs and managed to get an increase in revs by opening
>either one, which might indicate the front carb was supplying fuel for 3 and
>4, but nevertheless removed both carbs (which had been restored by Palltech)
>and they seemed OK to me.  Plus there was gas pooling in the inlet manifolds
>front and rear.
>
>Swapped the carbs (put the front one on the rear and vice versa) and same
>thing - car running on 3 and 4 only.
>
>Checked the valve clearances and they are all fine.
>Compression in good on all 4 cylinders.
>New plugs all round
>
>Thinking I may have left a rag in the manifold, I pulled both and they were
>fine.
>
>I am stumped!  Could there be valves which are not opening?  Or could I be
>losing spark under compression?
>
>Any help would be great.  At least this is one way of passing this
>winter.....
>
>Andrew Uprichard
>1957 TR3 needs restored
>1957 TR3 half-way there
>1959 TR3A driving me mad
>1962 TR3B gotta love it
>1968 TR250 just finished rebuild
>
>** triumphs at autox.team.net **
>
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