Is there a light at the end of the injector tunnel?

[BigAlAtlanta]

In many posts there is always a request for car service condition & background.

Q45 #1 – 1994 – purchased in 1998 and was a great daily driver until 2007 when a mean lady in a big MB decided to take out the Q45 from the rear. Over 275K miles with no real problems just realistic maintenance.

Q45 #2 – 1993 – A true southern car purchased in 2007 with 110K miles. Chain guides verified and lots of other repairs/maintenance performed by T3 Roswell. A few months ago, everything was doing great with the engine, suspension, brake, etc. It needs a new sound system but I can handle that.

A few months ago while out of town, car suddenly started running very rough. Local Infiniti dealer replaced two injectors and everything was great again.

In the last month, the car started running very rough again. According to T3 in Roswell, there are now three bad injectors. With the cost of new injectors at over $200 each, a complete replacement with the installation cost is over 2K. I understand that the cost of an older luxury V8 car. While spending 2K is a significant expense, my concern is that is only a temporary fix.

There have been recent postings here about possible links between the electrical voltage being constant to the injectors even while the car is off, plus an indication that later model (95+) model injectors may be “more resistant” to the issues of methanol.

I’m hoping to get some advice/suggestions on a reasonable path forward. These are all for a 1993 Q45 – 120 K miles, guides done, very good shape, living in a “Methanol” state. My concern is that the methanol issue could make this issue a yearly event. If I knew that it was a one time or a 50 – 75 K mile fix I would have no issues,

Based on specific knowledge from my profession, it appears that the methanol issue will become more prevalent. Currently it is added at the local distribution centers (where it comes out of the pipeline). There are ongoing projects to move the methanol addition back to the refinery and just supplement it at the distribution center.

My options as I see it are:

• Replace 8 injectors with new Nissan injectors.• Replace 8 injectors with rebuilt Deatschwerks injectors – +/-1000.00• Replace injectors with Deatschwerks upgrade kit and later model injectors – +/-1300.00 – 1500.00• Take advantage of any other suggestions presented here• In conjunction with these options I hope to find a method of installing a relay to eliminate the constant electrical supply to the injectors. Hopefully my buddies at T3 can help out on this.• Final option is to move my 327 with a powerglide out of my 66 chevy and install it into the Q.

My concern is that the plastic and seals in the new injectors will not last any longer than the plastic and seals in the rebuilt injectors.

I’ve both read good things here about the Deatschwerks injectors and had a friend use them on a different car successfully, but I know there are other options.

I’ve also mentioned T3 in the post, and like most people here, appreciate the work they have done for me in the past and the knowledge and experience they bring to this forum.

Any ideas or suggestions are welcome.

The good news is that it looks like a nice weekend in Atlanta, so I’ll be driving the Chevy with the top down. If the methanol eats up my Holley, I can fix that.