HEsitation, and Service Manual

[Alias]

My Car: 91' Fastback 145KMiles
First off,
My engine seems to hesitate under load from about 2-3.5k sometimes. It doesn't start until it warms up, and its comes and goes. Sometimes it bogs down, sometimes it kinda "chugs". I replaced the fuel filter, plugs, and wires. When doing the plugs they looked almost perfect after 50Kmiles. Showing only the normal grayish/brown deposits. So it leaves me thinking its something related to fuel delivery. Maybe the pump gets warmed up and surges? I have no clue guys. I know my way around cars, but I'm not much of an expert <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt=':)'>

Secondly,
I couldn't find a service manual for my 91' Fastback, so I grabbed the one for the 93' on up. It should be the same right? Same drivetrain, just diferent body? Thanks!

[S13Grl]

Also, try cleaning your throttle and look at your ail filter. Are your injectors okay?

[Alias]

Air filter is new, How do I check my injectors? I cleaned them with an aditive. That did nothing <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt=':)'>

[Alias]

Air filter is new, How do I check my injectors? I cleaned them with an aditive. That did nothing <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt=':)'>

[Alias]

Bump!

[S13Grl]

See if they're leaking for one. You can take it to a shop and have someone test them. You could also check your fuel pump out. Check your fuel lines as well.

[Arcane]

i had they same prob...check to see if you throttle body is a gummed up...that was the fix for my situation...other than that, i'd check you ENTIRE fuel delivery system...good luck...