Sluggish acceleration
Thread Starter
Team Owner
Joined: Mar 2001
Posts: 24,592
Likes: 44
From: The Rock Arkansas
Elite Member
Cruise-In III Veteran
Sluggish acceleration
Hey guys..I have a 94 roadster that has become sluggish on acceleration. The gas mileage as well has gone way down and the engine is running very rich as there is black soot on my bumper. Any ideas on likely cause/fix? TIA
Oil Producer
Joined: Apr 2014
Posts: 9,363
Likes: 2,734
my guess is the standard response is going to be an injector stuck open. I'd hit it with a leakdown test on the fuel rail. pressure testing kit is cheap, 15 bucks, and its fun. google how to test fuel pressure.
or
if you have an exhaust leak ahead of your (first??) o2 sensor (sucking fresh air into exhaust ahead of the sensor but after combustion has taken place), it could be thinking you have a high 02 concentration and is enriching the fuel mixture. try the leak down first.
my experience is with the L98 so not sure if its applicable.
