1996 With 1.6 Need Help

[Mncountry00]

Hello all I have 227k on this car this winter it did not want to start when cold so this spring I did a complete tuneup plugs wires distrib cap rotor capacitor and coil along with a pcv valve and fuel filter. Now when driving at a steady speed the car jumps and bucks like a bad misfire. No engine lights or stored codes. Cleaned the iat sensor tested tps and compression and I was all good not sure where to look next or if this is common

 

[Scott O'Kashan]

What brand and part number spark plugs were used? What gap were they set at? What quality parts were used? Not made in China junk I hope?

 

[Mncountry00]

Ngk platinum gap .32 rest of the parts napa belkium

 

[Donabed Kopoian]

Did you use dielectric grease on the cap and rotor as well as the plug wire boots?

 

[Mncountry00]

Yes sir I did

 

[Mncountry00]

Scott since no toyota parts close what other brand parts would we use also 2 questions
1 where does a person hook up a fuel pressure gauge I see nowhere to tee off from
2 when pulling the distributor out as long as you never crank the engine there is only one way it goes back in so you can't change timing correct

 

[Donabed Kopoian]

You could be off a tooth on your distributor but you said it only bucks when driving at a steady speed. If you were a tooth off it would idle and run really rough ... if you were 180 off it wouldn't fire at all. Of course, I'm assuming that the distributor has a pinion gear that works off the camshaft like any American V8. Not sure exactly how a distributor spins on those engines. If it works off a slot on the cam then there are only two ways to put it back in, working and not working.

I guess my next question is ... did you time the car with a timing light?

 

[Mncountry00]

It is not adjustable timing and they work off of a slot

 

[Donabed Kopoian]

Next best thing to do would be to disconnect your battery and start resistance checking your coil and your plug wires. It is possible you got stuck with a defective replacement part.

 

[Mncountry00]

Will do just check for intake leak nope and to define it more only happens from 2200 to 3000 rpm and the throttle is at about 15%

 

[Mncountry00]

Coil test good distrib air gap good also checked timing belt with my fluke 73III they were reading from 224 to 349 ohms supposed to be way higher am I looking wrong

 

[Donabed Kopoian]

If they are reading lower than they should be, that could be your problem.

 

[Mncountry00]

Well I grab a junkyard distrib today and that solved it I think that the coil from napa is bad will be returning it tommorrow

 

[Scott O'Kashan]

Good job!

 

[Donabed Kopoian]

Glad you found the issue