Question about 1995 Volkswagen Golf

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I've problem with my twin 40 DCNF turbo !

I made my vw golf mk2 turbo last week, And I've to say I used my twin Weber 40 DCNF to deliver my fuel, so now I've problem with fuel delivery at full throttle, At normal RPM and begging of the boost it works ok, but when RPM goes beyond 6000 my A/F ratio gauge goes to LEAN part and I can feel the car is running out of fuel, This problem starts at second gear and continues on other gears, I also have to say I used the 4bar fuel pump and Adjustable fuel pressure regulator but I can not adjust it to solve this problem, If I change the regulator setting I'll loose the low RPM rev, For more information I've to say My boost is set on 9psi, If you think I've to change the webber settings or main jet size or fuel pump and regulator so please let me know .

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6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 110 Answers

SOURCE: 2003 VW Polo TDI 5speed - Sloppy gear lever/shift

It should feel pretty tight, but germans (vw audi bmw porsche mb) put a lot of rubber bits in the linkage and when the rubber wears out, there is more play. 
If you want to fix it yourself,  check with the folks at blauparts.com for parts and advise on this.  They have OEM VW and Audi parts and they run a first rate repair shop also.  They will be able to tell you what rubber shift linkage parts are available AND how hard they are to replace.
germanautoparts.com is good for parts also
Dealship is usually most expensive for OEM parts.
Good luck,  when you get the rubber stuff replaced, it should feel nice and tight




Posted on Nov 05, 2008

  • 154 Answers

SOURCE: vw golf 2002 diesel tdi not getting fuel

sounds like the fuel pickup in the tank is no good it controls the fuel gauge.

Posted on Jun 07, 2009

morse008
  • 1111 Answers

SOURCE: I have a 2003 vw golf that keeps hunting it comes

sounds like throttle body position-er or the maf sensor( mass air flow sensor adjustment

Posted on Aug 24, 2009

alicantecoli
  • 22095 Answers

SOURCE: vw tdi turbo dying

check the rubber pipes are not collapsing ,they run from the air filter to the turbo if they appear ok then replace the turbo

Posted on Sep 09, 2009

drsinister69
  • 2317 Answers

SOURCE: I have a 1990 VW Golf II (1.8L, 4 cyl., 8 valve

The fuel pump, accumulator and filter are mounted in an assembly under the passenger side rear seat. The pump is held in the fuel pump box with 3 screws. The assembly bolts to the underneath side of the car with 4 13mm bolts. You'll need to disconnect the fuel lines to it and you can remove the entire assembly.

Posted on May 07, 2010

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What are the correct jets for a vw 2L 8V engine with weber 40 side drafts hi. i have a vw 2L 8V engine (stock standard) and i have a set of weber 40 side drafts on it. i please need to know what are the...


VW what car?
what year>?
no model, no year,
no joy.
are these custom carbs? if yes, NO ONE CAN answer that.
because.
Jets are tuned for YOUR engine alone.
if all this is true,then get the weber book, huh? and read it.
it tells you how to tune any weber, and its not simple. not at all
the webers are the most difficult to tune but on the other hand they are the best. (less compromise , makes great racing carbs).
there are on line weber tunning pages, why not google that.

in the old days, we'd use spark plug readings for full week end (wasted ) to tune any custom carb,,

fast forward, 21st century, we have nice wide bad 0xy sensor tool.
its about, $150 now.
we put a 02 exhaust bug on the exhaust headers, (both if v8)
and we tune the carb. using this tool , in about 1hour.
way less for only idle , idle is very simple NO ENGINE LOAD.
I set it to stoich and drive.
end story, unless , issues driving or up hills.

on stock carbs the idle has a mixture screw.
we set it to max RPM and the unscrew 1/2 turn (rich)
not all carbs some use an air screw. (backwards)
contrats, the most complex question ever asked on fixya.
ever.
join a car forum for your car, then find custom carb section
then ask there. bingo,, must maybe 1 other person did this.
but i can tell you if the engine is different , with custom exhaust
all the tuning must be done over.
eg: custom cam, milled heads, exhaust, bored cylinders. or ported inakes. all change DEMAND for fuel and must be tuned to match it.
same is true with EFI. (speed density) but not air density EFI.
see.... ?


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