What Are These Spark Plugs Telling Me?

[Mint Q45A]

Try NAPA - they used to carry them.

[Haitian_King]

Try NAPA - they used to carry them.

Thanks. I'll try them first.

[qship96]

Get the part #, listed in owners manual or factory service manual-I think they are NGK pfr-5g11 if I recall correctly and call your local auto stores to see if they have 8 in stock-no need to run all around town.If no luck,call local Nissan AND Infiniti dealers in your area early tomorrow and secure a set before your appt with Keith.

[Haitian_King]

Get the part #, listed in owners manual or factory service manual-I think they are NGK pfr-5g11 if I recall correctly and call your local auto stores to see if they have 8 in stock-no need to run all around town.If no luck,call local Nissan AND Infiniti dealers in your area early tomorrow and secure a set before your appt with Keith.

Will do.

[maxnix]

HK, if worse comes to worse, I can overnight a spare set of 6 heat range (don't think I have any 5) to Keith and you can replace those.

[oldmako]

I picked up a set last week at my local Advance Auto. They had the standard plug in stock and the cooler ones available in 4-6 hours. Less than 10 bucks a pop. Nice to know that some stuff is available locally if you need it NOW.

[Haitian_King]

HK, if worse comes to worse, I can overnight a spare set of 6 heat range (don't think I have any 5) to Keith and you can replace those.

Thanks for the offer. I don't want to commit to that now though. I'd hate to put you out of your way. I'm going to check Advance Auto, NAPA, and Infiniti of Maple Shade. I may hit Classic Nissan and Cherry Hill Nissan as well. Or at least give them a ring.

I'll let you know how it goes.

[goody90q45]

Progress report on the rehab of my 90Q.

Recap: The $120 injector flush gave me no improvement and I verified with a power balance test using Nissan Data Scan that #6 and #8 cylinders were still dead.

Today: I used my last injector to replace #8 and there was a major improvement. Acceleration is much better and the engine finally feels strong. I now have her running on 7 cylinders (started with only 4) but now I need to get a hold of an injector or 2 to finish it off.

Tonight I'm going to take it for a spin around town on the freeways hoping that the steady speeds and higher rpm will unclog the last injector and save me from having to remove the plenum.

[AlabamaDan]

Good to hear some progress Mike!

[Haitian_King]

Progress report on the rehab of my 90Q.

Recap: The $120 injector flush gave me no improvement and I verified with a power balance test using Nissan Data Scan that #6 and #8 cylinders were still dead.

Today: I used my last injector to replace #8 and there was a major improvement. Acceleration is much better and the engine finally feels strong. I now have her running on 7 cylinders (started with only 4) but now I need to get a hold of an injector or 2 to finish it off.

Tonight I'm going to take it for a spin around town on the freeways hoping that the steady speeds and higher rpm will unclog the last injector and save me from having to remove the plenum.

If you can't find any injectors, I still have three in great shape that I got from cccpman. Depending on what Keith says about my engine, I may be able to let one or two go and get a hold of some later.

[goody90q45]

I got the final injector from DeatschWerks yesterday and installed it today (#6) and my Q purrs like a kitten. She idles perfect at 750 rpm, shifts smoothly in all gears and accelerates very strong.

As a recap I ended up replacing 3 injectors (two were clogged, one was ohming high) and plugging the connector into a fourth (retainer clip was installed wrong by PO). Other than the four injectors and needing new plugs thats really all that was wrong with this Q.

I bought this 90Q for $500 delivered with 114,000 miles on it in mid-February. During the test drive it could barely go 20 mph or get out of its own way but I had a hunch that it's problems were pretty simple. The owner gave up on it and agreed to flatbed it 40 miles to my house since he owned the flatbed and truck and was coming down the hill anyway. Less than $400 later (3 injectors, injector flush, spark plugs, a couple of hoses, registration) I've got a very nice Q. Couldn't be happier.

I started to take pictures and dropped my (new) camera. It's broken. I'll have to replace it before posting more pics.

[lino]

Nice job Mike! . Finally you got your new Q up and going. It's gorgeous . I can't believe you dropped your camera though .

Btw Your piepans look better than mine. All you need now is the shiny centers.

[AlabamaDan]

Great Job and Congrats!!!! Now you've just got to change those wheels.

[goody90q45]

A couple more pics of my Q with the layer of dust and mud removed. She cleaned up nice. I'll be taking it in tomorrow to get smogged.

[Haitian_King]

A couple more pics of my Q with the layer of dust and mud removed. She cleaned up nice. I'll be taking it in tomorrow to get smogged.

Wow. That Q is amazing. I wish mine was that clean.

Great job Mike!

How'd you get the engine bay so clean?

[goody90q45]

How'd you get the engine bay so clean?

Start with a California car with no corrosion but a lot of caked on red dirt- everywhere. Add Simple Green, a bucket of water, rags, cleaning brushes, and a lot of elbow grease. Finish with Meguire's engine detailer. It helps that I had a lot of the parts removed twice to pull the plenum.

[maxnix]

I started to take pictures and dropped my (new) camera. It's broken. I'll have to replace it before posting more pics.

Why do I have a feeling that you will find a Leica for $50 that some owner doesn't know how to remove the lens cap?

[Haitian_King]

Start with a California car with no corrosion but a lot of caked on red dirt- everywhere. Add Simple Green, a bucket of water, rags, cleaning brushes, and a lot of elbow grease. Finish with Meguire's engine detailer. It helps that I had a lot of the parts removed twice to pull the plenum.

Oh. I see. So attacking the engine bay of a functional Q with a spray gun wouldn't be a good idea then right? The cleanest part of my engine that I know of is the interior of the valve covers. Keith ran it through the steam machine and told me that they were shining when they came out. Nice to know, but sort of a moot point, seeing as how I can't see it.

I'll try to figure this thing out. My Q is in dire need of a makeover. I need to find a good detailer. You think they'd do it at the dealership?

[maxnix]

Great Job and Congrats!!!! Now you've just got to change those wheels.

What? No love for pie pans? For shame!

A lot better than a lot of the poseur wheels one sees today!