Question: New Injectors: What else to replace?

[86-ZZ3]

The No. 3 cylinder injector of my 'vette plugged up on my way home from Seattle Tuesday night. It's the only cylinder where water squirted on doesn't evaporate instantly. Resistance is right and it's working but no fuel getting through. 23 years since the car left Bowling Green and the injectors are all original. Getting 24 lb injectors from Five 0.

Just wondering what else I should replace (getting someone else to do the work as I've got no place to do it myself) while the plenum is off? Fuel regulator? EGR valve?

 

[redvett]

Fuel pump & filter.

 

[Hib Halverson]

A new pump and filter make sense on a 23-yr. old car but why the 24-lb/hr injectors? Is this engine modified? Is so, to what extent?

The reason I ask is going from a 21.7 to a 24-lb injector is a significant increase in fuel flow and for the engine to run right at WOT, you'd better have modified it such that there's been a large increase in air flow to use the extra fuel.

 

[86-ZZ3]

Thanks for the suggestions.

Pump was replaced < 2 years ago when I put the car back on the road after 10 years of storage (was actually quite surprised the injectors worked after all that time) as was the filter. Don't think the car has 10k miles on it since.

Engine's a stock ZZ3 with SLP headers and Edelbrock baseplate/runners. Rated for 345 h.p. I think it warrants 24lb injectors over a stock L98?