Question about 1997 Chevrolet Cavalier

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Jet ski hey guys i have a 97 sea doo xp 787. carbs cleaned new top end including jugs 150 psi compression. runs good till ya hit high speed of the carbs then shuts down sometimes will restart others it seems locked up n wait 5- 10 fires up.

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Too rich, adjust thehigh idle screw

Posted on Aug 25, 2008

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93 xlt 580. Only runs on 2 cylinders sometimes at cold. Change plugs and works sometimes.. Not always same cylinder.. Any way to check stator,coil?


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Jan 04, 2016 | Cars & Trucks

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Jet ski is "hard stopping"


Any motor that runs and then develops sudden stopping symptoms gives me suspicions of fuel delivery problems.
I'm not familiar with your machine, but I would be looking at the fuel filter as probably plugged up.
Wild guess, but sometimes I luck out.
Cheerfuls.

Sep 06, 2015 | Cars & Trucks

1 Answer

Geo spontaiously dying


must be not in usa, as carbs ended 1989 here,
no matter, engine has the same needs, despite carb or EFI
I'll presume the stalls happen no matter the engine temperature.
and that it does warm up and HOLD 180F or more , when hot
and that it has fresh guess and is tuned up ever 60k miles , min.
in order., (skip em' as luck happens)
1: lost DC 12v power to the spark system. dash lamps go dead?
2: poor compression 1 or more cylinder, a $20 gauge.
3: bad spark, or timed wrong, or advance dead. (simple tests)
4: bad fueling (carb bad)
a: choke stuck on. (flooding)
b: long list of funky bad clogged gummy carb parts, jets, etc. service it.

if you run the timing belt over 60k , good luck with that.
but the compression will drop to 80PSI from 150+ PSI so is so easy to find a slipped belt. for such a cheap gauge test.
or just inspect it.
is this the 1.0L 3cyl engine option>?

Dec 10, 2013 | 1992 Geo Metro

1 Answer

99 Mazda Premacy automatic with rough idle. The car developed this problem shortly after having the radiator and head gasket replaced. Now idles extremely rough at a max of 500/600rpm but runs perfectly...


Sorry to say I would tend to agree with the mechanic at this point. Too bad all of that didn't get sorted out before spending big bucks on the head gasket repair. The cylinder with 90 psi is probably the reason for the rough running-makes me wonder if the mechanic used due diligence. Was the head checked for straightness of the head to block mating surface? It doesn't take heat very long to warp an aluminum head, and subsequent head gasket failure. Or it could be an exhaust valve not seating well, or a worn cam exhaust lobe on that cylinder. The bottom end has not "now failed", probably pretty worn piston rings; it is just questionable that the low cylinder is from the bottom end or the top end. A leakdown test of that cylinder would pinpoint the problem-I think I would suggest you get that test done-it is more precise than a compression test. It may help you decide-the leakdown test definitely will find the reason for the low compression in that cylinder.
Even so, if you got that one cylinder back to snuff, you would still have an engine with 130 psi as top compression-that is a bit on the low end, probably below the minimum compression that Mazda would recommend. It would still run good, but you might notice a loss of power, compared to an engine with 150 psi or more.

If it runs that well at higher revs, you could just drive it as is-what harm could it do? If the engine craps out, it was just meant to be! It's your call to have this engine rebuilt (again), swap in a better engine, or just run it into the ground till the engine finally gives up. But I would do the leak down test just to know what is up in that cylinder.
Good luck, Vern. Post back with what happens.
Put a vacuum gauge on a manifold vacuum tap and check the vacuum reading; from the hard brakes, it probably has low vacuum, but whether from a loose vacuum line or the engine can't make good vacuum with that low cylinder, I don't know.

Sep 07, 2013 | Mazda Premacy Cars & Trucks

1 Answer

When I try to start my Sea Doo 1996 xp 787 the oil light stays on and I lose all power after about 30 seconds


There is a oil level switch in the bottom of the oil tank, if your tank has oil in it then either your switch came unplugged or it's just faulty.. And the power shut down is a safety feature in case u actually do loose oil..

Jun 10, 2012 | Cars & Trucks

6 Answers

My 88 isuzu picup. How do I adjust the idle speed?


I just repaired my '94 and it had similiar problems. Too much fuel was flowing through the carb. Mileage dropped way off.

I rebuilt the carb but the real problem was a bent tang on the float. This resulted in the failure of the needle valve to close completely, regardless of the float level.

Nov 11, 2009 | 1994 Isuzu Pickup

1 Answer

Hi there 1960 series 2 land rover. Problem - idles ok on flat but dies on the slope/hill. Have put new parts in solex carburettor (Float etc). Is it the fuel pump?


Speaking solely from experience with working on and tuning different types of carburetors,mostly racing type cars,a carb engine that dies on a slope is starving for fuel,obviously,and more often than not it's either the float level and drop,or needles and seats.It is critical to measure and set the drop of the floats to prevent fuel starvation,as well as the maximum level allowed by the floats,to prevent flooding out the top.Needles and seats regulate the fuel coming into the carb based on the float level,so they are tightly intertwined with one another.Later versions of carburetors have high flow,and/or spring loaded needles and seats for extreme 4x4 climbing,so that starvation isn't an issue.Check fuel pressure from the pump,as well as volume,Volume is as important as pressure.You can measure volume easily with an empty jug and a helper to crank the engine over while you hold the fuel line into the jug,and watch how much fuel it's pumping.Easy and cheap check,plus you can watch what kind of pressure the pump is developing.6 psi is about the standard for carbs at the inlet.Racing engines can run 7-8 psi fuel pressure.Good luck.

Jul 24, 2008 | Land Rover Discovery Cars & Trucks

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