Bad acceleration after replacement of cylinder head gaskets

105

Asked by May 20, 2014 at 02:02 PM about the 1990 Ford LTD Crown Victoria 4 Dr LX Sedan

Question type: Maintenance & Repair

Both cylinder head gaskets were replaced recently on my '90 LTD Crown Victoria because of oil leakage. During re-assembly I decided also to replace the fuel injectors - although the engine was running perfectly before. Now the acceleration of my Ford is not as good any more as it was before the repair. The engine itself runs smoothly, it' s just the driving behavior. Which is more likely - a non-optimal setting of the distributer or bad injectors ? Ignition timing was set to 11° before TDC.

7 Answers

20

Have you had the throttle body checked? May need a new one

105

So you' d rather exclude bad fuel injectors and ignition timing ? What might be the problem with the throttle body ? Actually that' s just mechanics. Or do you mean the throttle position sensor ? Thanks

1 out of 1 people think this is helpful.
1,315

First off, your timing is retarded a touch. 12 degrees is the spec. 1 degree may not sound like much, but it makes a difference. Question. Did you do the heads or the valve cover gaskets? Ford 302 engines seldom need head gaskets, ever. I've seen them last over 1,000,000 miles and still have great compression. If you did the heads, you had to remove the distributor, and it may be off one tooth on the cam drive, and that would do it. Also, when you pull the distributor on these Windsor engines be very careful NOT to drop the oil pimp drive, or you will have to pull the oil pan to retrieve it.

Best Answer
105

Both - head as well as valve cover gaskets - and also upper & lower intake manifold gaskets were replaced. The engine was loosing engine oil and when I looked up the block from the bottom I could see traces of oil leaking between the block and the heads on both sides of the engine. I' m quite sure that oil leakage is possible although compression is still OK. Actually I did not have a compression problem - the engine was running perfectly. Since the gaskets were replaced, oil leakage seems to be stopped. So I will try to set ignition timing from 11 to 12 deg. as recommended. Perhaps that will solve my problem. Thanks.

20

not sure i said to exclude anything so.... just saying i had the same issue, same things checked, and it came back i needed to replace the throttle body. now it runs perfectly fine.

105

Unfortunately I cannot check before July if an adjustment of the ignition timing from 11 to 12 degrees before TDC wiill have the positive impact I expect. If this does not solve the problem, I will double-check throttle body and fuel injectors.

105

Ignition timing was set to 12 deg today - that solved my problem. Acceleration is as good as it was before the repair.

Your Answer

Add photo

Related Questions

LTD Crown Victoria

Looking for a Used LTD Crown Victoria in your area?

CarGurus has 16 nationwide LTD Crown Victoria listings and the tools to find you a great deal.

ZIP:

Search Ford LTD Crown Victoria Questions

Ford LTD Crown Victoria Experts

#1 Tracy Hooks
Tracy Hooks
Reputation 240
#2 Michael Tutty
Michael Tutty
Reputation 150
#3 dandyoun
dandyoun
Reputation 80
View All

Related Models For Sale

Used Ford Crown Victoria
9 Great Deals out of 1,059 listings starting at $3,450
Used Mercury Grand Marquis
23 Great Deals out of 1,785 listings starting at $2,250
Used Ford F-150
2,172 Great Deals out of 204,450 listings starting at $1,499
Used Ford Mustang
447 Great Deals out of 45,460 listings starting at $2,700
Used Lincoln Town Car
24 Great Deals out of 1,798 listings starting at $1,750
Used Ford Taurus
266 Great Deals out of 20,230 listings starting at $699
Used Toyota Camry
964 Great Deals out of 89,958 listings starting at $750
Used Ford Explorer
958 Great Deals out of 72,522 listings starting at $999
Used Chevrolet Camaro
187 Great Deals out of 31,082 listings starting at $1,217
Used Ford Bronco
192 listings

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.