1G Lack in power

[Pat026]

so I’ve recently fixed a ton on my 1g but it seems as I get on the throttle the car hesitates it feels like I hit a wall it jerks and backfires it throws a cel light for a split second but I’m not sure what I’m looking to fix first because I don’t know what it is, can’t tell if it’s knock or a misfire or a combination I just changed the plugs out as well as the noisy lifters. I recently did a boost leak test and nothings leaking on the compressor side I’m just hoping nothing in the motor is damaged like valves I do hear ticking still but can’t figure out where it’s coming from my compression was around 160 across

 

[pauleyman]

Post a profile so we can help you.

 

[Pat026]

On it

 

[Pat026]

OK I made it

 

[DSMPT]

Sounds like too rich A/F. Take a log and upload it. A log tells a lot. So, many people would chime in and would help you.

 

[Pat026]

On my way to work tommorrow I can get a Log but at idle I’m 14:7 idk if I can trust my wideband because it bounces everywhere

 

[DSMPT]

What cel code do you have? Maybe a bad knock sensor or it is not connected.

 

[Pat026]

No cel codes pop up, when I rev to about 5,000 the cel light flashes abruptly and the the car hesitates

 

[Pat026]

My knock sensor is hooked up I actually had to soldier a pigtail not to long ago my ignition and base timing are on point too

 

[rEclipserGST]

Which pigtail did you solder? I was always told it is better to use butt connectors than solder. Solder will change the resistance in the wires.

 

[Pat026]

The knock sensor pigtail soldiered and heat shrinked for longevity

 

[Pat026]

When I first bought the car a lot of the wires on the connectors were broken or frayed so whatever’s was broken I soldered and heat shrinked

 

[Pat026]

However if there was resistance it would have to be very small wouldn’t it? Technically a but splice wouldn’t be able to transfer a full current because the current flows through the strands and when there crimped not all the strands come in contact with the connector but I highly doubt that would be causing the hesitation

 

[motomattx]

The flashing cel is likely to be set up to show knock counts and display a cel above a certain level of knock, I wouldnt drive it with that light flashing just in case but if you soldered anything on a knock sensor I would just replace it, if its stock its likely junk 30 years later anyway.

 

[Pat026]

No I soldiered a pig tail onto the harness the knock sensor is brand new maybe a month old torqued to 17 lbs

 

[Pat026]

I’ll get a Log tommorrow so you guys can help sorry I’m still new to the whole tuning thing trying to figure this car out

 

[Pat026]

i was able to get one on the way to work I was able to get to 4th gear but challenging this early

 

[Pat026]

Any ideas?

 

[Pat026]

Found the problem exhaust manifold/turbocharger gasket leak used the shop vac in reverse through the tailpipe sprayed soapy water on the manifold and I bubbles up a lot on the corners I assume a gasket failure found it through the ticking, can this cause knock however?

 

[rEclipserGST]

Yes that will certainly be the source of EXTRA ticking, an exhaust leak. The o2 sensor is right inside your o2 housing, so an exhaust leak is hurting the A/F mixture.

Order some new turbo to manifold bolts & a nice SS gasket for the exhaust manifold AND the head to Exhaust manifold.

Most gaskets you can only crush once or twice.

ExtremePSI.com if you don't already know about them. They take around two or 3 days to deliver to me. Should be quicker to you.

 

[Pat026]

I think I have a spair turbo gasket but need a manifold gasket I’ll be sure to order em tonight so I mean I guess that could be why it bucks at a higher rpm now that I think after I changed my manifold out I was experiencing that well thanks guys!

 

[Vegas Smith]

Uncheck the "disable airflow smoothing" under the misc tab. You enable that if you're running speed density. Unlick the "disable maf compensation with speed density" under maf comp tab for same reason.

 

[Pat026]

Did that awhile ago maybe i just didn’t save it