Hard to start in morning, changed out cold start solinoid, no change,my truck is 86 toyota 4-runner w/22re engine

bad starter probably

I've seen from 500 to 1500 RPM in all the manuals I've been through, depending on the year and application (truck/car). In personal experience, 650-800 RPM is acceptable warm operation range. This will also depend on elevation. Will go up to 1200-1500 RPM for cold starting. I live at about 2000ft and my '86 Pickup 22RE idles at 725-750 like a top after about a 3-4 min warm up @ 1250 RPM if it's cold (<45ish).

Hi, 1994 4-runner hard-start after 3-4 hrs......All the above are good possibilities and should be checked.....I don't know what changing to E3 means exactly, but if it means changing the spark-plugs, it could be that the plugs are too cold or too hot ....it is probably best to stay with the factory recommended plugs ....some plugs are hot and some are cold ,in case you are not aware of it.......good luck with it....Frankie Don.

what engine do you have in this?

May have low fuel pressure or an alot of these older cars a defective coolant temp sensor can give you hard starts

Absolutely correct. Have cylinder head dye tested and checked for warpage before re-using. Do not run the engine any more than necessary ( into the garage or onto flatbed on it's way to shop) or you risk doing damage to engine bearings.

From the Mobil Oil website, all four versions of the 1988 Toyota 4 Runner selected below came back with a recommendation of 10W30 oil. If y the owner's manual came with the car, it should be in there.

From www.mobiloil.com
What's the right oil for my car? Tell us about your vehicle
Knowing the type of engine in your car is important to our ability to match products of the appropriate viscosity to your vehicle. Please pick the engine in your vehicle.
Current Vehicle: Year: 1988 Make: Toyota Model: 4Runner
Please select an engine type. Select Sub Model Cylinders Liter Aspiration DLX 4 2.4 Naturally Aspirated SR5 4 2.4 Naturally Aspirated SR5 4 2.4 Turbocharged SR5 6 3.0 Naturally Aspirated

can you tell me what this is in regards to what on the vehicle?

The thermostat is located at the end of the upper radiator hose. Were the hose connects to the top of the engine on the passenger side of the valve cover on the engine. I believe the housing takes a 12mm socket. Don't for get to get a new gasket for the thermostat housing, how thermostats come with the gasket. I also recommend changing your radiator pressure cap 13psi.

Here is a picture: