I have an '88 Volvo 240 DL station wagon that has a hard time starting when the engine is warm–i.e., after I’ve been driving it. When the engine is cold, it seems to have no trouble starting, but after it’s been running and I turn it off, the starter cranks but the engine struggles to fire up. I can usually get it going, but it requires several tries and I need to give it gas (generally I am flooring it) for it to catch. Sometimes when I let up on turning the key in the ignition, it sounds like it revs/lugs a little, like it might start up, but then doesn’t quite.
Relatedly, I’ve noticed that sometimes at low speeds or when starting from a stop, it lugs and coughs a little bit as if it might stall out.
Any ideas what’s going on? Thanks in advance!