I drove about 550klm today in a very noisy baja.I was almost empty and i put half a tank of 98 bp fuel in her and by the next set of traffic lights she had developed a flat spot where you had to feather the throttle to try to drive out of it.
On the way home i again almost empty filled her up with the cheapest unleaded and again almost immediatly the hesatation/flat spot was gone? Any ideas?
barls ·
too high an octane for the way its been tuned maybe what has it been run on before this
lohoon ·
It usually just gets the 92 rated fuel
Anthiron ·
then just run 92 in it.
usually with the 98 u can run the timing a little more advanced. which is what i do.
VWCOOL ·
98 doesn't evaporate as quick, and burns slower - hence the flat spot. No problem in a knock-sensed car, no good in a carby-fed low-comp donk like a VW!
[ Edited on 17-6-2006 by VWCOOL ]
barls ·
unless the timing is adjusted
VWCOOL ·
barls wrote:unless the timing is adjusted
yeah, 98 likes lots of advance
bond ·
and high comp?!
PrettyBlueBug ·
My Bug loves 98 and 100 octane... :P
sinecure ·
As long as it's tuned for higher octane it's no problem to run 98. Timing is critical as others have mentioned.
VWCOOL ·
bond wrote:and high comp?!
yeah, which kinda makes it a waste of $ in a stock VW