bw_hunter

Certainly, if a well designed, well respected product fails, and they certainly can and do, it's time for good customer service. However, when the product is substandard, good customer service can not, in the long run, make up for it. That's the point Honda is making with their recent commercials...a good warranty is not the same as good quality.

Anyway, we're so far off topic it isn't funny so I'm stopping. The OP now has more than enough information on what to buy for an OPTI....

jklopez09

Could the injectors be causing my problems? I pulled the cold air intake and it smells like gas. Also the throttle blades look wet. Looks like oil but smells like gas. And how can i check the injectors?

DevoDavo

Before you go too far, check all of the spark plugs. I had the same problem, changed out the opti, still didn't fix it. Turns out that I had a cracked insulator on one of the plugs (inside the cylinder) and it was sparking too soon. Worth checking, a lot cheaper than an opti.

jklopez09

Already tried plugs and wires... i got an oil leak around the opti so im kinda thinking the oil might be inside it. But this gas smell got me worried too

Injuneer

The only way wet fuel could get on the throttle blades would be if the oil was being diluted by fuel, the PCV system wasn't working and you had excessive blowby forcing the oil to flow backwards in the vent tube from the valve cover to the throttle body.

Over the course of the year when it sat idle except for occasional startup, have you ever changed the oil? Did you use fuel stabilizer or have you replaced the fuel with fresh fuel?

Just for a quick check see if there is wet fuel in the vacuum compensation line for the fuel pressure regulator.

jklopez09

Didn't change the oil but i ran out the gas and put fresh gas in a couple times. No gas in the vacuum line but does smell like gas. Im assuming that means it needs a regulator.

jklopez09

No gas in oil. I checked the vacuum hose after priming the fuel system and after running engine for a few minutes. No wet gas. But the hose coming out of the valve cover does not have a pvc valve

Injuneer

The PCV valve is on the driver side of the intake manifold. The line from the throttle body to the valve cover supplies the air that the PCV valve vacuum pulls through the crankcase.

jklopez09

How do you check the fuel pressure regulator with vacuum and what tool?

Injuneer

Put a fuel pressure test gauge on it. Take vacuum line off FPR. Pressure at idle should be in the range of 41 - 47psi. Reattach the vacuum line to the FPR. Pressure should drop about 6 - 8psi with a stock cam. Less with your CC305. You could also use a hand held vacuum pump, like a Mity-Vac and see if the fuel pressure drops as you apply vacuum.

jklopez09

I read a thread earlier about a guy that put a newer gauge cluster in his 93 firebird. It said his tach would work up to about 1500rpms and then go backwards. That is one of my problems. The guy i bought my 93 trans am from said the entire interior has be replaced with a newer model. So is there a tach fix to use 94+ gauge cluster in a 93 ta? I did a search but didn't find much info.

Injuneer

The 93 tach is driven directly from the coil, through a "filter". The 94 and up tachs are driven off the PCM. Not sure how you would convert the signals.

1BadBlueZ

My built 95 Z28 did the same thing so I replaced the spark plug wires with new Jegs 9mm wires and it fixed it. Ran 10 times better after I replaced the wires. Could also be plugs. I had an MSD opti on it.

jklopez09

So far i've swapped out the opti, icm, coil, injectors, and fpr with good parts from my 93 z28. I checked fuel pressure today and got 54psi with vacuum hose off and 47 psi with hose on at idle on the trans am. Isn't this too high?

Injuneer

Yes. Spec for fuel pressure without the vacuum line connected is 43.5psi, with an acceptable range of 41-47psi. Are you using the stock fuel pressure regulator? ..... stock fuel pump?