Grandsport 0 Posted June 23, 2006 Report Share Posted June 23, 2006 (edited) Hello ! I have a 88 Esprit Turbo (carbs version), at relative high speed (>=110mph) when accelerating hard, at a certain point the car doesn't want to continue to accelerate, the motor seems to "grazes" or "coughs" (I really don't know how to say it). It seems that the motor doesn't deliver its power, I have to decelerate to find again the motor working fine, it occurs only in the end of the 4 or 5 gear, in the 1,2 or 3 gear, the car is accelerating to +6000rpm very strongly and then in fourth after 4000rpm suddenly the engine coughs... any idea ? many thx for your replies, + Edited June 23, 2006 by Grandsport Quote Link to post Share on other sites
fflyingdog 57 Posted June 23, 2006 Report Share Posted June 23, 2006 Hello ! I have a 88 Esprit Turbo (carbs version), at relative high speed (>=110mph) when accelerating hard, at a certain point the car doesn't want to continue to accelerate, the motor seems to "grazes" or "coughs" (I really don't know how to say it). It seems that the motor doesn't deliver its power, I have to decelerate to find again the motor working fine, it occurs only in the end of the 4 or 5 gear, in the 1,2 or 3 gear, the car is accelerating to +6000rpm very strongly and then in fourth after 4000rpm suddenly the engine coughs... any idea ? many thx for your replies, + <{POST_SNAPBACK}> Hi What is your boost reading ? Quote Simplest things first. Link to post Share on other sites
Grandsport 0 Posted June 23, 2006 Author Report Share Posted June 23, 2006 Hi What is your boost reading ? <{POST_SNAPBACK}> Actually my boost gauge is not working... the part is no longer available @ sjs, interested if you know where I can buy one... Quote Link to post Share on other sites
Grandsport 0 Posted June 29, 2006 Author Report Share Posted June 29, 2006 do you think the problem could come from a weakness in the turbo at high speed ? there is a british owner in the same garage with a 88 turbo too and he is facing the same problem, never seen that in the other side of the channel ? B) +V Quote Link to post Share on other sites
Malc Holmes 2 Posted June 29, 2006 Report Share Posted June 29, 2006 Sounds very much like fuel starvation to me. An elderly fuel pump that can't keep pace with the fuel demand has got to be a likely candidate for the cause of the problem. Quote Link to post Share on other sites
AJay 1 Posted June 30, 2006 Report Share Posted June 30, 2006 Sounds very much like fuel starvation to me. An elderly fuel pump that can't keep pace with the fuel demand has got to be a likely candidate for the cause of the problem. <{POST_SNAPBACK}> I agree sounds like fuel starvation. Check fuel pressure regulator should be 4-4.5 psi on tick over. and remain 4 psi above boost pressure. Also check float hieght 1mm out can make a lot of difference when on boost. Quote Link to post Share on other sites
CNH 0 Posted July 1, 2006 Report Share Posted July 1, 2006 When is the last time you changed the fuel filter? Quote Link to post Share on other sites
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