engine running rough... what else to check??

cardude

Founding Member

Apr 20, 2000

221

0

0

Portland, OR

Dec 13, 2005

#1

• Dec 13, 2005

• #1

engine is wobbling pretty bad and not getting much better as rpms increase. I have a pretty loby cam but it used to smooth out above idle.

i checked spark and get spark to all plugs. how do I check to see if the cam lobes are flattening out? I am getting a little more of a tick under the valve covers but it does not too bad.

any other check I should be looking at?

thanks

 

W

Wootdog

Member

Oct 6, 2005

45

0

6

Dec 13, 2005

#2

• Dec 13, 2005

• #2

check all vac lines first then check for leaks under the carb choke stuck? but more than likly vacum making run rough bad plugs compression fould may be bad fuel or bad wires

 

jerry S

New Member

Sep 3, 2003

1,365

1

0

52.22N 5.12E

Dec 14, 2005

#3

• Dec 14, 2005

• #3

you might also consider that you have a bad tune.

 

rbohm

Founding Member

Apr 12, 2002

6,698

550

204

tucson,az

Dec 14, 2005

#4

• Dec 14, 2005

• #4

start by running a compression check, then a vacuum check. then check the plugs wires, coil, ignition module(if using electronic ignition), carb condition, etc. if you then feel you might have a wiped cam lobe, break out a dial indicator, and hand turn the enginewhile checking the valve lift. if all the valves lift the same, or close, amounts then you have a healthy cam, but if you have one or two valves that are very low, then you have a wiped lobe.

 

T

tylerrocks

New Member

Oct 13, 2005

514

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0

Big Spring, TX

Dec 14, 2005

#5

• Dec 14, 2005

• #5

Is it possible.....

Do you have mech lifters? Is it possible that you need to adjust your rockers?
Just a thought.

Tyler

 

geostang351

Member

Mar 30, 2005

946

0

17

Danb., CT

Dec 14, 2005

#6

• Dec 14, 2005

• #6

Did you cross two wires possibly and the firing order is off?

 

cardude

Founding Member

Apr 20, 2000

221

0

0

Portland, OR

Dec 14, 2005

#7

• Dec 14, 2005

• #7

plan on checking the wires and compression this weekend. wires are good, but I do have points and that makes me think a little.