Re: [doc] Re: Rich H and Chrispy to the rescue :o)

[Martin Gutkowski - DMC Ltd <martin@xxxxxxxxxxxxxx>]

Please explain to me why a lack of poppet valves will result in 
over-fuelling? All air entering the engine is metered and fuel injected 
accordingly, is that not correct?

As Dan has said, the backfiring is a side-effect of the higher tune of 
the stage 1 engine, but remove the back box and cat and ANY DeLorean 
will spit flames. Flopsy's exhaust back box has definitely seen better 
days and growls a lot in normal use. I think you'll find the baffles are 
shot.

Please don't mess about with the brass screws on that engine. They're 
where they need to be.

(a very jet-lagged) Martin

Richard Hutchinson wrote:

>That was exactly my theory Nick, though I never tried the brass screw
>thing 'on site'
>
>Rich H
>DOC 365 VIN 1274
>
>  
>
>>-----Original Message-----
>>From: doc-uk@xxxxxxxxxxxxxxx [mailto:doc-uk@xxxxxxxxxxxxxxx] On Behalf
>>    
>>
>Of
>  
>
>>Nick Tomlinson
>>Sent: 12 June 2006 09:01
>>To: doc-uk@xxxxxxxxxxxxxxx
>>Subject: Re: [doc] Re: Rich H and Chrispy to the rescue :o)
>>
>>i bet you any money you have had the throttle plates swapped from a
>>    
>>
>volvo
>  
>
>>one and these do not have the poppet valves fitted so on the over-run
>>    
>>
>the
>  
>
>>engine overfuels.
>>
>>  try seating the brass screws, then unscrewing the 2 nearest the W
>>    
>>
>pipe
>  
>
>>12 flats (2 turns). Then, run the engine to normal temperature then
>>unscrew the back one (nearest the metering flap) open until the engine
>>revs just increase then back it off 1.5 flats. This should give more
>>    
>>
>air
>  
>
>>bypass round the throttle plate instead of just through the idle speed
>>motor. Give it a go, this is how I set the engines so that the idle
>>oscillation is minimised.
>>
>>  Glad your car didn't go up in flames!
>>
>>  NickT.
>>
>>    
>>



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