2002 2.2L cavalier vin 4

25

Asked by Nov 25, 2012 at 02:48 PM about the 2002 Chevrolet Cavalier LS

Question type: Maintenance & Repair

first thank you for listening to  my question, even though i think i know my own answer. just looking for confirmantion i guess.  ive been a quality mechanic for more than 20 years, owning my own business for over 5 years, currently working in the parts side of the auto world now. with that said, let me say i dont know everything, and i know asking questions is not a bad thing.

have a 2002 2.2L vin 4 cavalier with about 115k miles. only had this car about 2.5 weeks now. it ran with a pretty bad miss, but seeing that no appearent maitnance had been don to it figured as a  used car it would need reg tune up issues, some brakes, ect. well after only about $150 in neccities, working on the tstat, which turned out not to be there, and a bad fan relay, i started to wonder. hummm??  well it still has a miss. all inj harness were checked with noid light, injector resistances were all within ohm specs, voltage referances are good. dry comp ck w/ w/o throttle, and leak down tests , not so good.
cyl 1 = 150 / 25% leak down
cyl 2  = 115 / 60% leak down
cyl 3 = 115  / 60% leak down
cyl 4 = 65 / 95%  leak down
mostly you can hear leak through intake. took rockers off # 4 to make sure valves were closed as much as possible, and tapped on valve stems to see if possibly a carbon build up issue was there. no change.
question is , cyl head replacement?

fyi on new related new parts / ac delco irid. plugs, plug wires, #4 coil, fuel filter, ign module, temp sensor, flushed cooling sys and new tstat.
codes = p0300 / p0304  / older snapon scanner

9 Answers

3,460

You need to locate the source of the leakdown before proceeding. Valves, rings, head gasket. Could be any one or all of those.

1 of 1 people found this helpful.
25

forgot to mention. no overheating and coolant is not overflowing, and no signs of air (no bubles) in tank when doing a leakdown test. minoe air noise from exhaust/barely moves smoke from match.

34,335

What made you do the leak down test? Did you do a compression test with bad results?

34,335

If so what were the results and when you did the leak down you did it on the compression strokes, not the exhaust correct?

34,335

My father is 62 and I'm 24. My questions are asked solely due to the fact that working around my father has showed me how much things have changed from the mid 90's, which is when he stopped working on cars, to early-mid 2000's, when he picked it back up, when I started working on cars. Plus the amount of change in the 10 years I have been turning a wrench. If by some odd chance you are accidentally testing on the exhaust/intake stroke you could be catching some valve overlap, or a loose timing chain could be causing the valve to not shut at tdc.

1 of 1 people found this helpful.
25

thanks for your responses. the tests were done on the compression stroke, yes. and removing the rockers should have eliminated the timing chain issue you mentioned when doing the leakdown test. besides i would think a timing chain problem would create other running problems. yes bad results on the compression tests as in my initial post. leak appears to be through the intake. i am believing that a previous owner overheated the enging and either damaged valves or cracked a valve seat or the head itself. i find out more ill let you know. thankyou again

34,335

A loose timing chain could cause the symptoms you describe not necessarily the cylinder 4 specific but the crappy running and the multiple random cylinder miss, and that's the only reason I asked. You did the test the exact same way I would have. You throw out there cylinder head with a ?. I look at it this way, pull the cylinder head and have it tested. If its leaking get a rebuilt one if its not leaking go from there. If you say its leaking into the intake then, something wrong in the head, is the only exlpanation because its the only thing connected to the intake.

1 of 1 people found this helpful.
18,795

do a wet vs dry compression test to attempt to rule out piston rings. If the wet compression test doesnt change the numbers drastically then its probably head, valves, or head gasket.

2 of 2 people found this helpful.
25

#4 cracked valve seat and 2 more burnt valves in the 2 & 3 cylinders. can only assume the lack of maitnance and overheating by previous owner lead to this. i know its just a car but why not take care of what you have, or why people dont ill never understand. oh well. had head resurfaced, checked, new valves and seats. car runs fine now. thankyou for all your help. steven

Your Answer

Add photo

Related Questions

  • 2002 2.2L cavalier vin 4 9 answers

    first thank you for listening to my question, even though i think i know my own answer. just looking for confirmantion i guess. ive been a quality mechanic for more than 20 years, owning my own busi...

    2002 Chevrolet Cavalier LS

    -

    Maintenance & Repair

  • 97 cavalier 2.2l CMP wire to 95 cavalier 2.2l CKP sensor? 4 answers

    have a 97 cavalier 2.2l engine blew up 4'' hole in front of block and 6'' hole in the back. unaware at the time till now its too late, i found an engine for the car another 2.2l but out of a 95 cava...

    1997 Chevrolet Cavalier Base Coupe

    -

    Maintenance & Repair

  • 2002 Cavalier Engine Swap 1 answer

    Hello, I own a base model 2002 Cavalier with 2.2 OHV Engine. It has 162k miles on it. I also own a 1999 Base model 2.2 OHV Cavalier. Is it possible to remove the engine from the 1999 Cavy and place ...

    2002 Chevrolet Cavalier Base Coupe

    -

    Maintenance & Repair

  • 97 cavalier 2.2l L4 1 answer

    I am currently in a Wal-Mart parking lot with a storm overhead. My 97 cavalier won't start. New water pump, thermostat, alternator and belt. Battery is New also. The car overheated so I shut her d...

    1997 Chevrolet Cavalier Base

    -

    Maintenance & Repair

  • 2002 Chevy cavilier

    Need wiring schematic for 2002 Chevy cavalier 2.2l

    2002 Chevrolet Cavalier Base

    -

    Maintenance & Repair

Cavalier

Looking for a Used Cavalier in your area?

CarGurus has 989 nationwide Cavalier listings starting at $695.

ZIP:

Search Chevrolet Cavalier Questions

Chevrolet Cavalier Experts

#1 John Saffrahn
John Saffrahn
Reputation 2,960
#2 dandyoun
dandyoun
Reputation 1,350
#3 mbar1
mbar1
Reputation 1,190
View All

Related Models For Sale

Used Honda Civic
831 Great Deals out of 83,701 listings starting at $750
Used Chevrolet Malibu
1,100 Great Deals out of 79,818 listings starting at $2,500
Used Chevrolet Impala
547 Great Deals out of 35,508 listings starting at $899
Used Honda Accord
1,052 Great Deals out of 66,932 listings starting at $1,000
Used Ford Focus
823 Great Deals out of 54,175 listings starting at $1,200
Used Chevrolet Camaro
372 Great Deals out of 31,226 listings starting at $2,500
Used Toyota Corolla
1,004 Great Deals out of 68,561 listings starting at $1,800
Used Ford Mustang
683 Great Deals out of 44,470 listings starting at $1,500
Used Toyota Camry
1,224 Great Deals out of 82,701 listings starting at $750
Used Pontiac Sunfire
348 listings starting at $2,100
Used Chevrolet Silverado 1500
1,932 Great Deals out of 182,333 listings starting at $999
Used Dodge Neon
667 listings
Used Volkswagen Jetta
550 Great Deals out of 43,842 listings starting at $800

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.