warm start problems on 73 silver shadow - Rolls-Royce and Bentley Forums
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post #1 of 3 (permalink) Old 09-02-2014, 06:38 PM Thread Starter
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Join Date: Sep 2014
Location: canada
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warm start problems on 73 silver shadow

hi i recently got a 1973 silver shadow where the previous gave up on the problem of it will not start when the car have warmed up cold start no problem fire first time as soon as it reached operating temp and say you stop to fuel up or stop to do some shopping on return it will not start the starter struggles to turn over the engine as tho it is very tight now if you leave the car for a few hours it will fire up on the turn of the key this car has had a lot of new parts trying to fix the problem this includes starter rebuild, new alternator, coil, distributor, distributor cap, rotor arm , fuel filters, carburetor rebuild, plugs, iv been over the work done which includes checking for spark when it has the fault of not starting so there is spark there is fuel. i have come to the conclusion that something is possibly expanding when warm thus making the starter motor struggle to turn over the engine to start the car?
some help would greatly be appreciated thanks

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post #2 of 3 (permalink) Old 09-02-2014, 07:24 PM
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Join Date: Nov 2011
Location: Northern Scotland
Posts: 526
I have seen this problem in other cars

1 Check out the earthing strap to the car and make sure good route back to battery, nect time you take the car up to temp, bring it home try the start, if you get the problem, try using the negative lad from a jump lead set connect to engine block, and decent ground point on chassis but even better negative on battery
2 Is it click start nothing which could be a corroded connector coming to starter, ok on cold but resistance fom engine soon breaks down connection
3 Hot engine fuel evaporation, literally boils off the fuel and results in non start, check engine timing, insulation around carbs points etc

Hope that helps

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post #3 of 3 (permalink) Old 09-04-2014, 08:31 PM Thread Starter
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cheers motorman il have a look over the weekend

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