Stag - not pulling strongly

Stag - not pulling strongly

Author
Discussion

BurblingBrownOne

Original Poster:

300 posts

222 months

Monday 8th June 2009
quotequote all
Brought Stag (original manual V8) out of hibernation for the supposed summer and engine fires up first time on the button, ticks over nicely.
However when pulling away there seems to be a real lack of power, once moving and the revs are up everything seems better, but its hard to judge if theres atill a lack of acceleration in the upper rev range.
Air filter / Oil pressure / temp OK / dash pot oil levels OK.

Still a bit of a novice at "spannering" - so any ideas were to look first greatly appreciated.

Cheers


sax player

273 posts

207 months

Monday 8th June 2009
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If its been laid up for a while i would tend to give the engine a service. Then a good hard run of 100miles and make the engine work.
shaun

jaybkay

488 posts

227 months

Tuesday 9th June 2009
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Lucas distributors can easily suffer from a siezed centrifugal advance, plus all distributors can have a duff vacuum advance. Always worth while checking as the centrifugal in particular makes a huge difference.

purpleperil

1,214 posts

291 months

Wednesday 10th June 2009
quotequote all
jaybkay said:
Lucas distributors can easily suffer from a siezed centrifugal advance, plus all distributors can have a duff vacuum advance. Always worth while checking as the centrifugal in particular makes a huge difference.
As above. Check the vacuum advance by taking the dizzy cap and vacuum pipe (manifold end) off and then suck on the advance vacuum pipe and make sure the points plate moves.

BurblingBrownOne

Original Poster:

300 posts

222 months

Wednesday 10th June 2009
quotequote all
Thanks for the advice guys, Ill get sucking on the pipe tonight (ooo eeer)!

BurblingBrownOne

Original Poster:

300 posts

222 months

Friday 12th June 2009
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Checked vacuum advance, sucked on pipe but points plate does not move.
At least I know where to concentrate now.
Thanks for the pointer.

purpleperil

1,214 posts

291 months

Friday 12th June 2009
quotequote all
BurblingBrownOne said:
Checked vacuum advance, sucked on pipe but points plate does not move.
At least I know where to concentrate now.
Thanks for the pointer.
Might be the diaphram in the advance unit that has perished. You do need to suck quite hard though to get any movement. Also, have you tried moving the plate by hand? It might be stuck and in need of some 'help' and lubrication. Anyone would think I've had the same problem wink

Edited by purpleperil on Friday 12th June 12:10