ttt

The optispark is the distributor. No physical adjustments are possible. No loosening the hold down bolt and cranking it to advance timing. Timing is all computer controlled.

------------------
Rob B (shoebox) 95Z A4, !T96
My New Tech Link Page

help needed!! i need to figure this out!! ive been dying to dyno and go to the track but feel its useless with the hesitation and wouldnt be accurate anyways of how the car performs....ill be trying some ideas soon, but please keep suggesting! bill h.....hows it going on your end?
brian

Wish I could help you out, but I am curious to see the problem thats causing all of this, so heres a TTT for ya!!!

Have you ever had the valve covers off? have you ever adjusted the rockers? Maybe they're a bit tight if you have.

Put some Wynn's engine oil treatment in the oil.

I had a sticky valve problem that was noticable at higher rpms.

------------------
'93 Camaro Z28 Automatic with a ZL1 hood.
No bottle.
No blower.
383 cubic inch serving of horsepower...hold the rice please.
Thats all you need to know.
ICQ: 23984221
Gripenfelter's Homepage

Disclaimer: The opinions expressed by me are not necessarily supported or indicative of the Government of Canada or any other Federal Employee.

thanks for the suggestion, this is what i am looking for, different ideas as to things i can try before i throw in the towel and go after big things.....
brian

You might want to double check vacuum lines. I've had some baffling problems due to some disconnected/loose vacuum connection...

good luck!

actually...i had a vacuum line that looked a little torn......can you explain to me how a vacuum line can affect 5k+ performance? i thought it was an idle thing?
thanks,
brian

When you replaced the coil did you replacce the ignition module too (the black box on the heatstink above the coil)? If not, I would check/replace that.

------------------
Solomon
What's life all about?
Silver '95 Camaro Z28 M6: 14.3 @ 98.7 - With problems, but will improve!
White '90 Cadillac deVille: 16.3 @ 81.4 - Not likely to change soon.
Learn the basics of tuning your OBDI LT1 PCM!

yeah, the ignition module is next up on the hit list....
brian

Brian,
If you get any results from the ignition module, let me know. I read another post where a guy had a similar problem and it turned out to be oil from his K&N on the electrical elements in the MAF? He cleaned it off with some spray cleaner and air dried it. Might be worth checking. Also, I see a lot of folks saying that their similar problem was a faulty EGR valve. I wonder if you just block off the EGR if that might help? I know my EGR is funky, I had to move it, did a relote setup, to fit the engine in my swap car. I might try the EGR block off mod.

I'll keep you posted of any developments.

Bill

i have a brand spankin new EGR.......so im hoping that aint it. thanks for the post bill, and i will keep you posted on anything and everything i try!
brian
BTW, im off to the dyno day where i WOULD have been dynoing except for this STUPID problem preventing me from doing so!

just got back from the dyno day....if i had been on track i woulda had one of teh higher numbers of the day, and woulda pulled with the LS1 guys too, so please help me out so next time i can show em some LT1 power!! (plus i really wanted to hear my GMMG on the dyno!)
brian

I'm having problems around 5k, but I don't know if its a miss that I'm experiencing. I get loud popping noises from the exhaust near the cat when it gets up there and don't know if its a miss or a clogged cat since I don't know the symptoms for either one.

------------------
Tim
1995 White Z28
-A4,3.23, Flowmaster AT catback, 3" cutout, high flow cat, 160* stat, !TB, LT4 KM, MTI cold air, LT4 ED timing set, Trans-Go shift kit, B&M tranny cooler, performance shift switch, descreened MAF, clear corners, '69 Z/28 emblems

1989 S10 4.3L A4
the beater

if its a clogged cat just take the cat off and see if its all f'd up inside. doesnt really sound like an opti thing to me....TTT for the hesitation ? please!!
brian