Date: Mon, 08 Mar 1999 20:11:00 GMT From: johnnopsamcation.com (john) Subject: Re: '86 9000 driveability problem (long)
Dear Eric, Thanks to the reply to my recent posting about ignition advance. In relation to your problem with hesitation I also have the same thing - I think unless yours is realy bad that its just the nature of the LH fuel system ie a slight delay between opening the throttle, the mass meter responding to the air and the system delivering fuel. I certainly noticed it when moving from my old T8 with mechanical fuel injection and my present T16 with the same system as yours. I just adapted my driving style to anticipate the delay. Other things to check - is there hesitation between on and off boost ie just before the boost comes on - if so it could be the vacuum advance / retard not reacting fast enough. I partly solved my hesitation by fitting an adjustable fuel pressure regulator and set the press at 2.8 bar instead of the standard 2.5 this seems to give the engine a bit more fuel and generaly smooth things out ( I have not noticed any increase in fuel consumption). One last thing (or two) dirty injectors? and plug gap should be .6mm. and cometo think of it I have heard (in this very news group) that Bosch platinum don't work well in Turbo Saabs - one to investigate further. John
