Quote:
Originally Posted by Regimof
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1. Replacing the fuel pump seems relatively painless, right? Just open the fuel door and take off the filler cap and it's right there? Any advice?.....................................
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I see this happen frequently. A ZR-1 sits for extended period. Here's the procedure.
1. Remove the fuel pump sender assembly. Don't be shocked if its covered in rust.
If so, replace the complete sender & pumps unit. Do not reinstall the fuel pump sender until after step 6 is completed.
2. While fuel pump sender is out, siphon out all of the old gas. Clean out the fuel tank. Will likely be rust & old fuel. Tank itself is lined so no rust from the tank.
3. Remove the fuel filter, inside the Right side frame rail.
4. Blow air from the gas tank supply line to clear out the fuel line between the tank & filter.
5. Disconnect the fuel feed & return block located at the rt-rear of the plenum. Blow air gently back through the supply line to clear out the fuel line between the filter & fuel feed & return block. Replace the 2 original o-rings with new Viton o-rings.
http://www.jerrysgaskets.com/seal-se...on-90-95-11d8/
6. Install a new fuel filter.
http://www.jerrysgaskets.com/filter-...lco-90-95-1b3/
7. Install the fuel pump sender assembly. Be careful not to get a wire pinched under a flanged bolt head.
8. Using a fuel pressure tester
bleed the fuel rail of old fuel, with key on, engine off (KO,EO). When fresh fuel is observed, check fuel pressure, KO,EO.
9. Since this is a 94 ZR-1, trying the original injectors is OK. Check fuel pressure, KOEO. Should be about 44 psig.
10. Start the engine. Be prepared for rough running & injectors that may not function until old fuel is washed through with fresh gasoline. Don't run the engine at any higher rpm than is required to keep it running.
11. Depending on the degree of fuel varnish within the rails & injectors, it may take driving the car for an hour or so before passing judgement on the injectors, i.e. are they going to be ok. A new set (16) injectors is costly, so it's worth trying. If it had been a 90~92 ZR-1 with original injectors, I would have recommended replacing with new.
Good luck.