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jazzmaster
jazzmaster, Classic Car Mechanic
Category: Classic Car
Satisfied Customers: 2540
Experience:  ase certified--32 yrs experience
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Chevrolet El Camino: I have a 454 engine that runs 220 to 230

Resolved Question:

I have a 454 engine that runs 220 to 230 it has a nre radiator,water pump,electric fans(2),new 180 thermostat,new gauges it is belived to be a late 70's to early 80's engine...........what to do?
Submitted: 1 year ago.
Category: Classic Car
Expert:  jazzmaster replied 1 year ago.

hi, my name is XXXXX XXXXX I will help you .

first I need to ask a few queastions ..

1) how are you measuring the temp ?

2) how long does it take from first starting the motor until it reaches over 210 degrees ?

3) have you tried flushing the block ?

jazzmaster

Customer: replied 1 year ago.


The temperature is measured by the guage. It takes approxatmtely 3miles to reach 210. I have not flushed the block.

Expert:  jazzmaster replied 1 year ago.

are the fans running all the time ?.

was the car running the temp the same with out the electric fans ?

do you have a clutch fan in the car now ?

Customer: replied 1 year ago.

yes the fans run all of the time.


yes it ran the same temp. before the electric fans


 


no clutch fan

Expert:  jazzmaster replied 1 year ago.

if you have an infered lazor thermometer reader,on the intake measure the temp ,first at the front of the intake near the thermostat and at the back of the intake ,see if there is a difference .It couldnt hurt to flush the block .

can you see the coolant flowing good in the radiator ?

Customer: replied 1 year ago.


Yes

Expert:  jazzmaster replied 1 year ago.
ok, did you check for temp difference between the front of the intake and at the back
Customer: replied 1 year ago.

no

Expert:  jazzmaster replied 1 year ago.
can you get or do you have an inferred lazor temp gun ?
Customer: replied 1 year ago.


I have a friend that does but it will be a couple of days before he can check it

Expert:  jazzmaster replied 1 year ago.

did this engine have a lot of miles on it or sit for awhile ?

was the coolant /water in the block rust colored ?

Customer: replied 1 year ago.


Don't know the answers to your questions but will try to find out

Expert:  jazzmaster replied 1 year ago.

if it was sitting or there was rust in the motor ,it may be partially clogged in the rear of the motors water passages ,not enough to block the flow but to that point where it could be blocked .

you can try flushing out the block and see if that helps if not then you may have to remove the soft plugs in the rear of the block and clean it out that way .

there are some good cleaners out there -Gunk brand,.but you will need a heavy duty cleaner ,that will usually do the trick ,you may have to do it twice even .. but I would try that first .

you can also have a block test done to check for hydrocarbons in the coolant ,as for a possible cracks in a head or head gasket , a bad head gasket doent mean that it will smoke out the exhaust,or put oil in the coolant etc.

if that pans out then flush the system ...jazzmaster ..

jazzmaster, Classic Car Mechanic
Category: Classic Car
Satisfied Customers: 2540
Experience: ase certified--32 yrs experience
jazzmaster and other Classic Car Specialists are ready to help you

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jazzmaster
jazzmaster
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ase certified--32 yrs experience