No Compresion in my 4th Cylinder! - Engine Troubleshooting


	Auto Repair Home	SEARCH POSTS	WHO'S ONLINE	LOG IN

Automotive Repair

Car Troubleshooting Topics
  Car Troubleshooting
  Engine Troubleshooting
  Engine Fault Codes
  Electrical and Wiring
  Transmission Problems

Car Repair Topics
  Car Making Noises
  Car Stereo Repair
  Heating or AC Issues
  Motorcycles and ATVs
  Tricks of the Trade
  Truck Repair Advice

Site Options:
  Login
  Sign up here!

Latest Forum Post

Strut spring orientation and strut mount tension nut

2017 Nissan rogue awd 2.5 L Put in Monro...

Transmission stuck in part, I have tried everything

So I'm working on my elderly fathers 201...

2017 dodge journey LED headlights on/off randomly

Year of vehicle 2017 Make of vehicle dod...

Kia Soul starter replacement issues!

Okay so my car is a 2010 Kia soul 2.0 en...

Please Help - Knock sound & engine fail

Hi all, Hoping to get some insight and ...

multiple warning lights

2013 GMC Terrain 130,000 miles 4 cylinde...

03 alero no low speed blower

Good day everyone, I have a 2003 Olds a...

04 Chevy 2500hd tail light issues

Help!!! I have changed my combo switch...

1999 Grand Caravan Sport not starting.

Hi. I'm new here. I hope someone can hel...

Brake Seals Bulging

2021 Toyota Corolla LE 1.8l 65,000 mile...

No Compresion in my 4th Cylinder!

Sign up here!

Search for (search options)

Auto Repair Home>> Automotive Repair>> Engine Troubleshooting

ChevyS-10
New User

Jul 22, 2007, 3:21 PM

Post #1 of 4 (1348 views)

No Compresion in my 4th Cylinder!	Sign In

I've got a 1994 Chevrolet S-10 2WD 2.2L with a cold air intake kit and dual exhaust. It started running rough and started missing so i changed the plug wires and plugs, fuel filter and the ERG valve. No Good. So i checked all of my compresion in the cylinders and i have between 100-125p.s.i. in the first 3 cylinders and none in the 4th. I squirted some oil in it and tryed that. Yet again no good. It has 221,000 miles on the motor. I was just wondering if i should put a new cylinder head on it or if i should just find a motor somewhere and do it that way. I would greatly apreciate any help and or advice you can give me. I'm at my wits end!

thank you very much,
Adam Smith-Urbany

p.s. if you know of a good 2.2L motor around let me know!!!

ChevyS-10
New User

Jul 22, 2007, 3:25 PM

Post #2 of 4 (1347 views)

Re: No Compresion in my 4th Cylinder!	Sign In

p.s.s. sorry its EGR valve... oops...

way2old
Veteran / Moderator
way2old profile image

Jul 22, 2007, 4:25 PM

Post #3 of 4 (1344 views)

Re: No Compresion in my 4th Cylinder!	Sign In

Sounds like you might have to pull the head to find out dor sure what the problem is. If you can get your hands on a borescope it will help you figure exactly what has happened. It is also a possibility there is a hole in the piston also. Good luck with it.

Being way2old is why I need help from younger minds

redfox81
Novice

Jul 22, 2007, 10:16 PM

Post #4 of 4 (1338 views)

Re: No Compresion in my 4th Cylinder!	Sign In

Could it be a displaced valve (rocker kicked off)? Try using a sparkplug type airfitting that screws into the sparkplug hole and pressurize (try to atleast ) the cylinder. Or remove the valve cover and look at the rockers. With the miles you have on it maybe you need to rebuild it or replace it. Mine made it to 352,897 miles before the #2 piston started dissintegrating from the bottom up to the oiler ring.

Search for (options) Privacy Sitemap