2000 Buick Park Avenue

Hi Folks,

So on my previous post, I did the intake manifold, that project is complete.

Now I have a code for misfire on cylinder number six. I changed the plug since it looked burnt from running a little hot. Still missing so it wasn't the plug. Then I got the code for an open circuit on cylinder six for the injector. Tested it with the multi meter and its done for.

I am going to replace only this one injector since everything was great before I did the intake. When your're fooling with twenty year old pieces something is bound to go awry and it was probably mishandled.

My question is this: do I have to take the whole fuel rail off again to replace just this one injector or can I simply loosen the two ten millimeter bolts on the back part of the fuel rail and then wiggle out number six from its opening and then replace?

Also, does the replacement come with everything put together specifically the o rings? Anything else I need to do or know?

You would have to take the whole rail off. And to be on the safe side, replace all 12 o-rings on the injectors. The uppers and the lowers. And if it were me, I'd replace all 6 injectors.

While your at it, why not ohm out the rest of the injectors.

Ditto on replacing them all. Do a full set. They will be balanced.

Update to the previous posts. I got cylinder six fuel injector changed, first time doing this. Not too bad but still had the miss. I replaced all six plugs with iridiums and it seemed like the problem was arcing wires. These were not even two years old so i changed them with what it came with were Delphi. All good now, it hasn't missed since. Just hitting 194,000 miles tomorrow. Had to do the radiator in February.180 000

Seems like since the virus hit, my Park Avenue got sick as well, unbelievable. It did sit for months from March until Summer but who knows. Running as strong as it ever has. But now my rear shocks are leaking and one is seizing up. I have two new KYBs. Had installed cheap Chinese ones by mechanic in mid 140,000 *. Didn't last 50 000 miles and i saw them leaking two years before that this time 2019 at around 180,000, so not even forty thousand miles. WOW

Ya I've been there too & decided a while ago to use Monroe 90007 Coil overs. Been on the Buick for 6 years now.
They sure eliminated the sag You may experience a slight spring noise from time to time though.

I am amazed at how much garbage is out there and how much mechanics use them and then charge like they premium. I don't know what they used on mine but they're certainly not KYB or Monroe. And they put this stuff on Amazon at cheap prices and people don't really know until the inferiority of the product reveals itself in the not too distant future.

Don't fall into that trap.