Slow to rev and 4000 rpm max under load - Ideas to cure?

[sciroccoinj@yahoo.co.uk (Andy Holmes)]

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Hi chaps

My car has a problem

Basically she revs very slowly and runs out at 4000 - 4200 under load. Just kinda dies as if its hit a jelly wall!!

The engine just went back in after a 3 month rebuild with a lightened flywheel and gas flowed head and new head gasket etc. I was expecting a faster pick up not a slower one!

Now - the timing appears spot on and i have had that professionally checked. The mixture has been adjusted to correct. I have spark, i have air, i have fuel, i have compression - 15 bar for each cylinder. She idles beautifully but i think im getting combustion gases in my water as the pressure in the cooling system is vast!!

and it will rev to 6800 when at a standstill!!!!

Any ideas?

My thoughts are

1) Main and or lift pump and or fuel filter

2) Vacuum loss

3) Timing

Car is 91 Scirocco 1.8 running k-jet (CIS) no cat, flowed and skimmed head, 3kg flywheel, stock cam (G-grind)

 

 

 

 

 


Andy Holmes

91 Scirocco Scala Inj
83 Jetta 2.1



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<P>Hi chaps</P>
<P>My car has a problem</P>
<P>Basically she revs very slowly and runs out at 4000 - 4200 under load. Just kinda dies as if its hit a jelly wall!!</P>
<P>The engine just went back in after a 3 month rebuild with a lightened flywheel and gas flowed head and new head gasket etc. I was expecting a faster pick up not a slower one!</P>
<P>Now - the timing appears spot on and i have had that professionally checked. The mixture has been adjusted to correct. I have spark, i have air, i have fuel, i have compression - 15 bar for each cylinder. She idles beautifully but i think im getting combustion gases in my water as the pressure in the cooling system is vast!!</P>
<P>and it will rev to 6800 when at a standstill!!!!</P>
<P>Any ideas?</P>
<P>My thoughts are</P>
<P>1) Main and or lift pump and or fuel filter</P>
<P>2) Vacuum loss</P>
<P>3) Timing</P>
<P>Car is 91 Scirocco 1.8 running k-jet (CIS) no cat, flowed and skimmed head, 3kg flywheel, stock cam (G-grind)</P>
<P>&nbsp;</P>
<P>&nbsp;</P>
<P>&nbsp;</P>
<P>&nbsp;</P>
<P>&nbsp;</P><BR><BR>Andy Holmes<br><br>91 Scirocco Scala Inj<br>83 Jetta 2.1<p><p><br><hr size=1><a href="http://uk.yahoo.com/mail/tagline_xtra/?http://uk.docs.yahoo.com/mail_storage.html";><b><font face="Arial" size="2">With Yahoo! Mail you can get a bigger mailbox -- choose a size that fits your needs</font></b></a><br>
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