Evening Guys, I got a 91 Integra GS 1.8L that i have been trying to get on the road for about a month now.. I have been on here several times with questions and have gotten a little closer each time. The symptom I am having while driving is, I am having a misfire under acceleration (load) around 3K and 4K RPM. If im just cruising there seems to be no problem.
The timing is dead on, i have checked compression 150-155psi accross the board.. Replaced Distributor twice, new fuel pump.. yet she is still doggin out on me when i try to step the pedal to the metal.. Any Help would be greatly appreciated, really wanna get this car back on the road ASAP..

THANKS FOR THE IDEAS!!

 

Finish the tune up with new wire set( bosch) spark plugs( ngk v power) and air filter to finish off the easy possibilities of ur car misfiring under load

 

Oh yea..fuel filter also, and don't ignore ur exhaust....a failing or clogged catalytic converter will give u that hesitant feeling.(considering the car is stock)

 

Replaced Plugs, Wire, Fuel Filter, and put a test pipe in.. still having the same issues... any other ideas?

 

Check the spark. Either get a spark tester or:

Performing this test at night or in a dark area will make it easier to see the sparks. Warm the car up completely to normal operating temperature or as hot as your motor gets. Ignition components are affected by heat and problems with those parts may not show up until the engine is hot. Disable the fuel injectors by pulling the fuse or disconnecting them and get a new or known good spark plug. Set the gap of this plug to your vehicle's specifications and make sure it is clean afterward. Wear gloves (welding gloves work great), preferably with latex or nitrile gloves underneath, and remove a spark plug wire from its plug. Connect the good plug to the end of the wire. Hold the plastic deep-well tube by the rubber boot at the tip of the wire end with the threads of the plug touching clean, bare metal on the valve cover. Have an assistant watch you during the test so that the starter can be turned off immediately if need be. Tell the person to crank the motor while you watch the spark, carefully keeping all body parts as far from the plug, motor and metal body parts as possible. You're not just avoiding touching the source of the voltage, but also any grounded metal. Different types of plugs have different colored sparks but usually a good spark is a thick, strong flow of bright pink or white. Little "lightning bolts" indicate a weak ignition. Check all four wires. If the sparks at all of the wires are weak, try holding the threads of the plug against the battery negative post to see if the better ground makes a stronger spark. This will test your entire ignition.

You follow a similar procedure when using a spark tester.