Question about 1995 Honda Civic del sol
This is usually an indication of "blowback" caused by worn piston rings. How many miles on the engine? There is not a cheap solution if it is blowback.
Posted on Apr 28, 2009
SOURCE: 92 Honda civic LX hessitation.
Did you have the computer reflashed for the new injectors? If not, you have to do so. I don't know how much bigger than stock your new fuel injectors are but if it's more than just a little bigger, and you don't reprogram the computer, your mixture is going to be way too rich and you'll be stumbling. Have the ECU reprogrammed to properly control the injectors - many modifications don't affect, or are not affected by, the ECU, but injectors aren't on that list. If you did reprogram it, it may be simply because larger injectors aren't as precise when flowing slowly or at small duty cycles. There's also the chance that one or more are leaking slightly although that's not as common.
Posted on Jan 22, 2010
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Aug 16, 2014 | Cars & Trucks
the negative battery cable from your Nissan Maxima. Wait at least 10 minutes in
order to prevent the engine cooling fan from causing any potential harm while
your hands are near it. Additionally, the engine must be completely cool in
order to safely remove the air intake manifold.
a screwdriver to remove the hose clamps around the air intake duct. Gently pull
the duct from the rest of the manifold.
the accelerator cable, cruise control cable, hoses and electrical connections
from the throttle body. Coolant may be lost through some of the hoses, which
can be prevented by utilizing hose clamps or plugs. Be prepared with a catch
pan underneath the hoses to collect any major spills.
the spark plug wires from both the spark plugs and the retainers on the plenum.
Unbolt the distributor cap. Use a pen and tape to label each wire with its
location so that you can easily return each wire to its exact location once the
air intake manifold has been put back in place.
the ground strap, which is attached to the upper plenum of the air intake
manifold and use a socket wrench to loosen the bolts. There are 11 bolts on the
upper intake plenum.
the upper plenum, which should still be attached to the throttle body. While
the upper plenum of the Maxima's intake manifold is removed, it is a good idea
to clean the mounting surfaces as well as the inside of the manifold with a
stiff wire and brake cleaner. Use lint-free mechanics' rags to wipe away carbon
Removing the Lower Plenum
the cooling system by inserting a catch pan beneath the radiator's drain bolt.
Unscrew the drain bolt and hold up a 3/8 hose with a funnel on the end of it to
direct the coolant to the catch pan. Open the drain fitting with a pair of
pliers and remove the radiator cap.
the radiator hose from the thermostat housing and disconnect the electrical
connections from the coolant temperature switch and the coolant temperature
sensor. Label these connections with tape and pen as described above for the
upper plenum hoses and wires.
the bolts to disconnect the coolant pipes at the transmission's end of the
the bolts on the lower manifold by turning them in 1/4-turn increments until
they can be removed by hand. The manifold may need some gentle nudging to be
released from the cylinder heads, but do not pry it loose -- doing so can cause
damage to the sealing surfaces, leading to vacuum leaks.
a scraper to remove any gasket material and sealant from the outer parts of the
manifold and cylinder heads. Clean the mating surfaces with lacquer thinner or
acetone so that a new gasket can be applied to the lower manifold.
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Fig. 6: Cutaway view of a base entry type EGR valve
Fig. 7: Cutaway view of a side entry type EGR valve
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