Engine lacks power + poor fuel econ

215

Asked by Nov 10, 2007 at 12:47 AM about the 1993 Honda Civic del Sol

Question type: Maintenance & Repair

Can anyone tell me how I would know if my engine is running rich?  I seem to be getting below-average fuel economy out of my D16Z6.  Also, acceleration is not consistent and the car sometimes lacks uphill power.  Very rarely, it seems to misfire.  I did a full tuneup not long ago, replaced the clutch/master/slave, and ran a bottle of fuel injector cleaner.  I installed headers recently, but with a stock front pipe and cat.  The O2 sensor looks new.

One idea I've been toying with is that the timing is off.  Now I'm also wondering if I need a fuel injector or perhaps a new ECU.

5 Answers

check map sensor and temp control sensor

2 of 2 people found this helpful.
5,355

What do you mean by "full tune up?" Plugs, wires, ALL filters? If so, yeah, then check the MAP and TCS.

1 of 1 people found this helpful.
46,185

Also check TPS as well as the 02 sensor, just 'cause it looks new, doesn't mean it's working properly.

1 of 1 people found this helpful.
75

I would first do a compression and leak down test, to see if the motor is internally healthy. If those tests go well, do a basic tune up. NEW spark plugs, new plug wire, new cap, new rotor. Dont cheap out here. Buy good parts, or you will end up doing this again in a couple years. Buy NGK plugs and wires, bosch cap and rotor. These are brands that ive had very good luck with, and what i run on my 575whp B16, so I think they will work for your stock z6. If you are un sure of your timing, what have you done to change it? Have you removed your distributor, or replaced the timing belt? Get yourself a timing light, and adjust the dizzy to correct setting. If you are unsure on the timing belt, thats a bit more trouble. Remove the valve cover, and the upper timing belt cover. Then line up the TDC line on the crank pully with the mark on the lower timing belt cover, then check to see if the cam gear is also showing TDC. (TDC = top dead center)

1 of 1 people found this helpful.
2,350

I concur with Joel; his advise is the best. I'd only add, is the check engine light on? If it is, retrieve the code and address that issue. Your Cat Converter could be going out.

Your Answer

Civic del Sol

Looking for a Used Civic del Sol in your area?

CarGurus has 34 nationwide Civic del Sol listings and the tools to find you a great deal.

ZIP:

Honda Civic del Sol Experts

  • #1
    Nick Mullins
    Reputation
    70
  • #2
    Vicente Sanchez
    Reputation
    50
  • #3
    Joel Mashburn
    Reputation
    40
View All

Related Models For Sale

Used Honda Civic
736 Great Deals out of 54,090 listings starting at $1,495
Used Honda Civic Coupe
185 Great Deals out of 11,067 listings starting at $1,695
Used Honda Prelude
100 listings starting at $1,995
Used Mazda MX-5 Miata
77 Great Deals out of 3,977 listings starting at $2,995
Used Honda Accord
909 Great Deals out of 79,343 listings starting at $1,295
Used Acura Integra
92 listings starting at $2,500
Used Honda Accord Coupe
157 Great Deals out of 5,795 listings starting at $1,300
Used Toyota Supra
61 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.