ef9er0

Car is a 90 Acura Integra GS 5 speed with 170k miles on it

Alright so here is what happened, I was driving home from school and I stopped to get gas and I accidentally put 91 octane gas in, I usual run 87 cuz car is old and it runs like crap with better gas i don't know why. So then I got back on the freeway and drove about 7 miles then the car just lost power and couldn't do any thing so i pulled off to the side and from that point on it wont start.

Once I got it towed home I checked the fuel pump and its working the main relay is clicking and tried my ecu in my buddy's car so I know its good. After checking all the fuses i looked and im getting spark, then I pulled the valve cover and my tbelt is good and it didn't jump timing. So I pulled the return hose on the fuel rail and im getting gas to the rail so then I pulled my plugs and they are bone dry so I tried using a different resistor box and nothing so then changed my injectors with 2 different sets and still no gas is getting in the cylinder. I am getting power to the box and injector's. When I crank it the car backfires for a second.

Now im stuck and don't know what to check maybe the ignition coil? weak spark?? bad wiring??

ef9er0

bump need help

Rickcrx

Did u check all the grounds?

ef9er0

yup

EHondaJDM

You eather jumped timing or lost compression

Id check both, any smoke coming from the exhaust

el crapitan

when you checked spark, was it perfectly consistent and not random?

dntnedvtec

You might have jumped timing. YOu ever cranked your car manually? Do you know how to check your timing?

SDHonda153

I'd get a new set of plugs, even though they spark when out of the cylinder. My car did that once and took me two days and I checked EVERYTHING and couldn't find anything wrong with it, the plugs even sparked when grounded and I had someone crank it. I ended up throwing a new set of plugs in there and it fired right up and has ever since. Just something to try being plugs are only like $1.50 each for some NGK's.

EHondaJDM

Checking the timing is free

lsd96teg

If you have a spare dizzy try that, kinda sounds like a coil issue

ef9er0

I checked timing twice! I was thinking about trying a spare dizzy but wanted to get some feed back

EHondaJDM

Compression test, if your positive your getting spark and fuel timing/compression would make most sense..

Possibly a map sensor bad but I doubt it. Any smoke out exhaust?

dntnedvtec

A bad MAP pressure will idle really shitty. You should try the spare distributor.

EHondaJDM

Lmao, dntnedvtec, that quote in your sig is priceless

ef9er0

I get little puffs of black smoke

buttschopshop88

Def check the distributor if you have a spare, by all means, double and triple check your belt/ignition timing.
I've had similar issues, It was the distributor...

buttschopshop88

Def check the distributor if you have a spare, by all means, double and triple check your belt/ignition timing.
I've had similar issues, It was the distributor...

ef9er0

so u guys don't think it could be the gas?

j_mee_5

try changing the fuel filter its about 20 bucks at advance

fcm

If the plugs are dry, "I pulled my plugs and they are bone dry" the problem is no fuel, either no power or low power at the injectors, [make sure there is 12V+ at all the injectors with ign. switch in run or start] or there is no pulse from ECU/ECM, [check for 12V- pulse at each injector when cranking to start. 94

ef9er0

I checked the power to the injectors the day i got it towed home and they all have 12v. I was working alone so I couldn't check to see if they pulsated when I tried to start it,I will check all the compression and injectors when I get home.

ef9er0

Checked compression and all tests within spec. As for the injectors I gd 12v constant even when I Try to
start the car.

j_mee_5

get a o2 censer

ef9er0

A bad o2 sensor will cause the car to die? And not start??

turbobuick6

a bad o2 wont cause it to die and not start, pinch the return line possibly the regulator s stuck open??